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Question

If b2=4ab, then the value of x in a+x+ax=b is

A
2
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B
a+b
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C
0
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D
ab
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Solution

The correct option is C 0
a+x+ax=b
or a+x+ax+2a2x2=b
or 2a2x2=b2a
or 4(a2x2)=b2+4a24ab
or 4a24x2=4a2
or 4x2=0 or x=0

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