2 answers:
Answer:
(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
(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.)
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