Question

Multiply and simplify: x squared minus 4 over x squared minus 1 times x + 1 over x + 2

Answer 1

do you know the trick when you have a "difference of a perfect square"

Answer 2

no

Answer 3

notice that x^2 is a perfect square because x * x = x^2

Answer 4

and 4 is a perfect square because 2 * 2 = 4

Answer 5

and it is a difference because there is a minus sign between them

Answer 6

oh ok

Answer 7

when we satisfy those three thing theres this cool trick to factor it that always works