coefficient
Chat with our AI personalities
Perfect
perfect * * * * * Not strictly. they could both be multiples of sqaures. For example, factorise 3x3 - 48x. Neither term is a square but they do become squares when the common factor, 3x, is separated out. Also, when rationalising surds, one would use the difference of two squares but (at least) one of the terms is not a square.
Given two integers, x and y, their squares are x^2 and y^2. The difference between them is called the difference of perfect squares and is (x^2-y^2) This is important because we can always factor this as (x+y)(x-y). We don't really need x and y to be integers, but in elementary algebra classes they often are. In reality, they can by any numbers. The idea behind this is when you multiply (x+y)(x-y) the xy and -xy terms cancel each other out and you are left with the x^2 and -y^2 terms.
the different of two perfect squares can be formed by taking any two perfect squared terms
A difference of two squared terms, i.e.:a2 - b2This form can be factored into (a + b)(a - b).