livingbarbiee livingbarbiee

24-07-2019
Mathematics

contestada

x2 + 12x =
– 20
what are the roots of the following quadratic equation

Respuesta :

Risa290 Risa290

24-07-2019

Answer:

x = -2

x = -10

Step-by-step 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!

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