Question

Factor completely. x2 + 5x + 6 A. (x - 3)(x + 3) B. (x - 1)(x + 6) C. (x + 3)(x + 2) D. (x + 5)(x + 1)

Answer 1

being $x^{2} +5x+6$ the answer is (x-3)(x-2)

begin $x^{2} -5x+6$ the answer is (x+3)(x+2)

1. $x^{2} +5x+6$

second grade formala is used

$x= \frac{-b±\sqrt{b^{2} } -4ac}{2a}\\ x=\frac{-5±\sqrt{5^{2} } -4.1.6}{2} \\ x= \frac{-5±1}{2} \\ x_{1} =-3 \\ x_{2} =-2$