Question

Which equation is equivalent to the given equation?

X^2 - 61 = 8
A (x – 3)2 = 14
B. (X – 6)2 = 44
C. (X- 6)2 = 20
D. (x – 3)2 = 17

Answer 1

D. (x – 3)^2 = 17

Explanation:

We assume you want an equivalent to x^2 -6x = 8.

We can complete the square by adding the square of half the x-coefficient to both sides of the equation.

x^2 -6x +(-6/2)^2 = 8 +(-6/2)^2

(x -3)^2 = 17 . . . . simplify