Question

1

Solve for x.

(x - 4)(x - 4) = 0
A.
-16
B.
-4
C.
4
D.
16
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Answer 1

(x- 4)(x-4) =0

either,

(x-4 )=0

or, x=+4

Or,

x-4 )=0

or, x=+4

Hence, the answer is c i.e 4

Answer 2

(x-4)(x-4)= 0

x-4= 0 , x-4= 0

x-4+4= 0+4 , x-4+4= 0

x= 4 , x= 4

Answer is x= 4 (C.)