Question

Solve the equation x^2 − 36 = 0.
Select one of the options below as your answer:
A. x = 0, –6
B. x = 0, 6
C. x = 6, –6
D. x = 18, –18

Answer 1

C.) 6, -6

Answer 2

see yr equation can be put as

(x)^2 - (6)^2
then using the formula \[a ^{2}-b ^{2}=(a+b)(a-b)\]

Answer 3

we get
(x)^2 - (6)^2 = 0 ==> (x+6)(x-6) = 0
if x+6 = 0 ==> x = -6
if x -6 = 0 ==> x = 6

so C) 6, -6

Answer 4

C. is correct