Question

Select the correct answer.

Find the solution(s) for x in the equation below.
x^2+10x+21=0

Answer 1

Hope this helps

Explanation:

x= -3, -7

Answer 2

x = -7, -3

Explanation:

Try to factor the left side of the equation.

(x +7)(x + 3) = 0 Remember that if AB = 0, then A = 0 or B = 0 or both A and B = 0

Therefore, x + 7 = 0 or x + 3 = 0

x = -7 or x = -3