Answer:
x = 2 or x = -18
Step-by-step explanation:
Solve for x:
x^2 + 16 x = 36
Add 64 to both sides:
x^2 + 16 x + 64 = 100
Write the left hand side as a square:
(x + 8)^2 = 100
Take the square root of both sides:
x + 8 = 10 or x + 8 = -10
Subtract 8 from both sides:
x = 2 or x + 8 = -10
Subtract 8 from both sides:
Answer: x = 2 or x = -18
