Question

Simplify. 2a + 2 / a^2 - 1

Answer 1

the numerator 2a+2 simplifies to 2(a+1) the denominator simplifies to (a+1)(a-1) and now we have

2(a+1)/(a+1)(a-1) = 2/(a-1) :)

Answer 2

what about this one ?

What is the undefined value of 3b^2 + 13b + 4 / b + 4

Answer 3

when b=-4

Answer 4

because the the undefined values or discontinuity points are when the denominator is equal to zero so b+4=0 and that is b = -4