Question

What value is a discontinuity of x^2+2x+3/x^2-x-12?

x = -1

x = -2

x = -3

x = -4

Answer 1

this will occur when the denominator x^2 - x - 2 = 0

Answer 2

ok

Answer 3

can you solve x^2 - x - 2 = 0 for x?

Answer 4

yes using the quadratic formula correct?

Answer 5

@cwrw238

Answer 6

would it be one @cwrw238

Answer 7

no you can factor this one
x^2 - x - 2 = x^2 - 2x + x - 2 = x(x - 2) + 1(x - 2) = (x - 2)(x + 1)

so x = -1 , 2

Answer 8

so its -1 in your list