Question

Now that you have x² - 8x + 16 = 9 + 16, apply the square root property to the equation.

Answer 1

x=−1,−7

Explanation:

Answer 2

The solutions are {-1, 9}

Explanation:

x² - 8x + 16 can be re-written as (x - 4)^2, and 9 + 16 as 25.

Taking the square root of both sides of (x - 4)^2 = 25, we get:

x - 4 = ±5, or:

x = 4 + 5 = 9, and

x = 4 - 5 = -1

The solutions are {-1, 9}