Use the quadratic formula to solve the equation

X^2+9X+20=0

-4 or - 5

Step-by-step explanation:

Well, you have to first understand variables a, b, and c. A in this equation is 1, b is 9, and c is 20. Then you plug those into - b ± sqrt (b^2-4ac) / 2a and find that the discriminant, or what is under the square root, is one. Your two roots will be - 4 and - 5.

x=-4

x=-5