Question

If (x + 1)(x - 3) = 12, then which of the following statements is true?
A.x + 1 = 0 or x - 3 = 0
B.x + 1 = 12 or x - 3 = 12
C.x - 5 = 0 or x + 3 = 0

Answer 1

i think its B

Answer 2

I feel none of these,........

Answer 3

why?

Answer 4

its C

Answer 5

x*2 -2x-3=12 2+/- 8
x*2-2x-15=0 --- x_1,_2 = ------- = --- x_1 = 5
2 --- x_2 = -3

Answer 6

and from this resulted that C. is true

Answer 7

oh well after that its C