Question

Solve $x^2+5x+6$

• A. 1, -6
• B. -2, -3
• C. 0, -5
• D. 3, -2

Answer 1

Answer:

B. -2, -3

$x^2+5x+6$

a=1, b = 5, c = 6

$x= \frac{-b±\sqrt{{b^2-4ac}}}{2a}$

$x= \frac{-5±\sqrt{5^2-4\times1\times6}}{2\times1}$

$=\frac{-5±\sqrt{1}}{2}$

$=\frac{-5+1}{2}$

$=-4/2=-2$

OR

$x=\frac{-5-1}{2}$

$=-6/2=-3$