Question

Solve x2 – 8x = 20 by completing the square. Which is the solution set of the equation?

{–22, 14}
{–14, 22}
{–10, 2}
{–2, 10}

Answer 1

{–2, 10}

Step-by-step explanation: hope it helps ^w^

Answer 2

(-2,10)

Explanation:

Let's solve your equation step-by-step.

x2−8x=20

Step 1: Subtract 20 from both sides.

x2−8x−20=20−20

x2−8x−20=0

Step 2: Factor left side of equation.

(x+2)(x−10)=0

Step 3: Set factors equal to 0.

x+2=0 or x−10=0

x=−2 or x=10

Answer:

x=−2 or x=10