Question

How do u multiply x^2-4 over x^2-1 times x+1 over x^2+2x

Answer 1

(X2-4)/(x2-1). * (x+1)/(x2+2x)
[(x-2)(x+2)]/[(x-1)(x+1)]. * (x+1)[x(x+2)]
(x-2)/(x-1) * 1/x
(x-2)/(x2-x)

Answer 2

`(x ^ 2-4 )/(x ^ 2-1)*( x + 1 )/(x ^ 2 +2 x)=(x ^ 2-2^2 )/(x ^ 2-1)*( x + 1 )/(x(x +2 )) =\\ \\ \\ =((x -2)\\ot(x+2)^1 )/((x -1)\\ot(x+1)^1)*( \\ot(x + 1)^1 )/(x\\ot(x +2)^1 )= ( x-2 )/(x(x-1)) \\ \\ \\ \\a^2-b^2 =(a-b)(a+b)`