Question

If (x + 1)(x - 3) = 5, then which of the following statements is true?

Answer 1

(x+1)(x-3)=5
=>x^2-3x+x-3=5
=>x^2-2x=5+3
=>x^2-2x-8=0
=>x^2-4x+2x-8=0
=>x(x-4)+2(x-4)=0
=>(x-4)(x+2)=0
so x=4,-2

Answer 2

x + 1 = 0 or x - 3 = 0
x + 1 = 5 or x - 3 = 5
x - 4 = 0 or x + 2 = 0 these are the answer choices dow

Answer 3

the answer is x-4=0 or x+2=0