0
(x2 - 9) / (x2 + 3) does not have a simple solution. Perhaps the question you were actually looking to have answered was:
(x2 - 9) / (x + 3)
Which is equal to (x - 3). This is called a difference of squares, where any time you see a term in the format:
(x2 - b2)
You know that it is equal to (x + b)(x - b). Of course, (x + b)(x - b) / (x + b) will be equal to (x - b), giving you the answer above.
If on the other hand, you are indeed looking for the answer to (x2 - 9) / (x2 + 3), you could try long division. That will give you 1 with a remainder of negative twelve, or:
1 + 12/(x2 + 3)
Alternately, if you have a value for the term, you can solve the equation:
(x2 - 9) / (x + 3) = a
x2 - 9 = ax + 3a
x2 - ax = 9 + 3a
x2 - ax + (a/2)2 = 9 + 3a + (a/2)2 ← this is called "completing the square".
(x - (a/2))2 = 9 + 3a + (a/2)2
x - (a/2) = [9 + 3a + (a/2)2]1/2
x = [9 + 3a + (a/2)2]1/2 + a/2
You can then plug in whatever value is given for 'a'. For example, if it's equal to zero:
x = [9 + 3(0) + (0/2)2]1/2 + 0/2
x = (9 + 0 + 0)1/2 + 0
x = 91/2
x = 3
Note that x can not be equal to negative three, as that would cause division by zero in the original equation.
Add your answer:
Earn +20 pts
Kylie bought a bunch of grapes that weighed 2 pounds and 9 ounces. How much did the grapes weight in ounces?
1 pound = 16 ounces so 2 pounds = 16ounces x2 = 32 Now add the other 9 ounces - 9 + 32 and the answer is 41 ounces
What are the reactions in the equation for cellular respiration?
Basic Equation: C6H12O6 + 6O2 --> 6CO2 + 6H2O Word Equation: Glucose + 6Oxygen --> 6Carbon Dioxide + 6Water However this question is too general there are many reactions in the respiration reaction, glycolysis is the 1st stage of respiration that occurs in the cytoplasm not the mitochondia. There are 9 main steps... Step 1: Glucose + ATP --(Hexokinase)--> Glucose 6 Phosphate + ADP Step 2: Glucose 6 Phosphate --(Phosphoglucose Isomerase)--> Fructose 6 Phosphate Step 3: Fructose 6 Phosphate + ATP --(Phosphofructose Kinase)--> Fructose-1,6-bisphosphate + ADP Step 4: Fructose-1,6-Bisphosphate --(Aldolase)--> 2Glyeraldehyde 3 Phosphate Step 5: 2Glyceraldehyde 3 Phosphate + 2(PO4)3- + 2NAD --(Dehydrogenase)--> x2 1,3-Bisphosphoglycerate + 2NADH Step 6: x2 1,3-Bisphosphoglycerate + 2ADP --(Phosphoglycerate Kinase)--> x2 3-Phosphoglycerate + 2ATP Step 7: x2 3-Phosphoglycerate --(Phosphoglycerate Mutase)--> x2 2-Phosphoglycerate Step 8: x2 2-Phosphoglycerate --(Enolase)--> x2 Phosphoenolpyruvate Step 9: x2 Phosphoenolpyruvate + 2ADP --(Pyruvate Kinase)--> 2Pyruvate + 2ATP * I realsise most of these rections could be divided through by 2 but you've got to realise that for 1 glucose in glycolysis there is a net gain of 2 ATP's and 2 NAD's are reduced. The next stage of respiration is much more simple and occurs in the matrix of the mitochondria, The Link Reaction, there are 2 main steps... Step 1: Pyruvate + NAD --(Decarboxylase & Dehydrogenase)--> Acetyl + CO2 + NADH Step 2: Acetyl + Co-Enzyme A --> Acetyl CoA The Next stage of respiration is the citric acid cycle also known as the krebs cycle, it agin occurs in the matrix of the mitochondria and there are 8 main steps... Step 1: Acetyl CoA + Oxoloacetate --(Citrate Synthase)--> Citrate + CoA Step 2: Citrate --(Aconitase)--> Isocitrate Step 3: IsoCitrate + NAD --(Decarboxylase & Dehydrogenase)--> Alpha Ketoglutarate + CO2 + NADH Step 4: Alpha Ketoglutarate + NAD + CoA --(Decarboxylase & Dehydrogenase)--> Succinyl CoA + NADH + CO2 Step 5: Succinyl CoA +ADP +(PO4)3- --(Succinyl CoA Synthetase)--> ATP + Succinate Step 6: Succinate + FAD --(Dehydrogenase)--> Fumarate + FADH Step 7: Fumarate --(Fumarase)--> Malate Step 8: Malate + NAD --(Dehydrogenase)--> Oxaloacetate + NADH And the cycle starts again The Final stage of photosynthesis is the electron transport chain, there are no equations in this step it consists of 2 processes chemiosmosis and oxadative Phosphorylation. It is where the reduced NAD & FAD Come to be reoxidised. http://hopes.stanford.edu/sites/hopes/files/f_j13electtrans.jpg Sometimes NAD/FAD are reduced to N/FADH2 depending on the H+ concentration. The electron transport chain is a system of proteins called cytochromes in the inner mitochondrial membrane that contain a Haem group with an iron atom in the middle. NADH--> NAD + H H --> H+ + e- The NADH is oxidised at complex 1 & FADH at complex 2 which is ialso the succinate dehydrogenase enzyme. The electons are then passed along the cytochromes oxidising and reducing the iron atoms. Fe3+ + e- --> Fe2+ Fe2+ --> Fe3+ +e- This in turn creates energy this energy is used to actively transport the H+ ions from the matrix into the inter membrane space across specific prteins this is chemiosmosis. A H+ ion concentration gradient and hence potential energy builds up. The hydrogen ions begin to flow back the the ATP synthase enzymes driving the rotation of part of the enzyme... ADP + (PO4)3- --> ATP This is oxidative phosphorylation. Here is where the oxygen is finally used. It is the final elecrton acceptor and is reduced to oxide, the H+ ions join to the H+ ions to form water, 4e- + 4H+ + O2 --> 2H2O End of respiration You should realise though that these are only the main reactions, sometimes GTP/CTP/TTP are used in place of ATP, water is needed in some reactions to catalyse the hydrolysis of some molecules, so this isn't the whole picture.
How many times does 4 go into 63?
It doesn't. However, it does go into 60, 15 times and 64, 16 times.15 times with a remainder of 3
How many feet and inches in 3 meters?
3 meters = 9 feet 107⁄64 inches.
What is the simplest form of 9 and 5 3?
10 and 2/3
What is the remainder when 3 is synthetically divided into the polynomial -x2 5x - 9?
-3
What is the answer to 9-x2?
7
What is x2 - 9?
-7
Factor 9 - x2?
9 - x2 will factor into (3 - x)(3 + x)
How do you factor x8-81?
(x2 - 3)(x2 + 3)(x4 + 9)
What is the factor of x2 - 9?
(x + 3)(x - 3)
Is x2-6x plus 9 can factor?
x2-6x+9 = (x-3)(x-3) when factorised.
What is the factor poloyonomial of 9 - x squared?
9 - x2 = 32 - x2 = (3 - x)(3 + x)
Factor the following x2 9?
-7
How to simplify X squared - x - 12 divided by x squared - 9 over x squared - 3x?
To simplify the equation:(x2 - x - 12) / [(x2 - 9) / (x2 - 3x)]first, factor the numerator:= (x + 3)(x - 4) / [(x2 - 9) / (x2 - 3x)]Now bring the bottom term, (x2 - 3x), up to the top (remember, a/(b/c) = ac/b):= (x + 3)(x - 4)(x2 - 3x) / (x2 - 9)then factor the extra "x" out of the term (x2 - 3x):= (x + 3)(x + 4)(x - 3)x / (x2 - 9)now note that the bottom term is a difference of squares, and factor that out:= (x + 3)(x + 4)(x - 3)x / (x + 3)(x - 3)now you can see that the two terms on the bottom can be factored out of the top term, giving you:x(x + 4)which equals:x2 + 4x
How do you sovle f(x)x2-9?
11
What are solutions to the equation x2 plus 4x-9 equals 5x plus 3?
x2+4x-9 = 5x+3 x2+4x-5x-9-3 = 0 x2-x-12 = 0 (x+3)(x-4) = 0 x = -3 or x = 4
