Multiple Choice Question (MCQ)
If (x + 1)^2 − (x − 1)^2 = 32, what is the value of x?

×
4

×
6

✓
8

×
10

×
12
If (x + 1)^2 − (x − 1)^2 = 32, what is the value of x?
4
6
8
10
12
Appy difference of squares identity on the left hand side
(x + 1)^2 − (x − 1)^2
=[(x+1)+(x1)][(x+1)(x1)]
=2x(2)
=4x = 32
Divide both sides by 4
Therefore, x = 8