1.

यदि `2^(x+4)-2^(x+2)=3` हो तो `x` का मान ज्ञात कीजिए?

Answer» Correct Answer - D
`2^(x+4)-2^(x+2)=3`
`2^(x).2^(4)-2^(x).2^(2)=3`
`2^(x)(2^(4)-2^(2))=3`
`2^(x)(16-4)=3`
`2^(x)=3/12=1/4`
`2^(x)=2^(-2)`
`x=-2`


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