Question

Which represents the solution(s) of the equation x² = 324?
A)
X= 118
x=+ V18
O
x=- V324
D)
x= 324

Answer 1

x² = 324

x² - 324 = 0

x² - 18² = 0

(x - 18)(x + 18) = 0

x = 18 or x = -18

x = ±18