Question

What should be added to both sides of the equation below to complete the square?

x?
+ 6x = -8
O-4
O-2
O-9
09

Answer 1

Explanation:

x² + 6x = 8

Coefficient of the x term: 6

Divide it in half: 3

Square it: 3²

Add 3² to both sides of the equation to complete the square and keep the equation balanced:

x² + 6x + 3² = 8 + 3²

(x+3)² = 17