4x+41-x=4 হলে x=?
Solution
Correct Answer: Option C
4x + 41-x =4
or,4x + 4/4x=4
or,{(4x)2+4}/4x =4
or,(4x)2+4=4.4x
or,(4x)2 - 4.4x+4=0
or,(4x)2 - 2.4x.2 +22=0
or,(4x-2)2=0
or,4x-2=0
or,4x=2
or,(22)x=2
or,22x=2
or, 2x=1
∴ x=1/2
or,4x + 4/4x=4
or,{(4x)2+4}/4x =4
or,(4x)2+4=4.4x
or,(4x)2 - 4.4x+4=0
or,(4x)2 - 2.4x.2 +22=0
or,(4x-2)2=0
or,4x-2=0
or,4x=2
or,(22)x=2
or,22x=2
or, 2x=1
∴ x=1/2
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