Question

X2 + 12x =
– 20
what are the roots of the following quadratic equation

Answer 1

x = -2

x = -10

Explanation:

Step 1 : Rearrange

x² + 12x + 20 = 0

Step 2: Factorise

(x + 2)(x + 10)

Step 3: Find the roots / values of x

Make each bracket equal zero.

(x + 2) = x = -2

(x + 10) = x = -10

Hope this helps!