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यदि `2^(2x-y=)12` और `2^(x+y)=32` है `xy` का मान ज्ञात करें?A. 2B. 4C. 6D. 8 |
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Answer» Correct Answer - C `2^(2x-y)=16` (given) `implies2^(2x-y)=2^(4)` `:. 2x-y=4` ………..i `2^(x+y)=32` (given) `2^(x+y)=2^(5)` and `x+y=5` ………….ii by equation i and ii `2x-y=4` `(x+y=5)/(3x=9)` `x=3` `:. y=2, xy=3xx2=6` |
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