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If `(9)^(2x+4)=(243)^(2x-3.2)` , then x =_______A. 12B. 10C. 8D. 4 |
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Answer» Correct Answer - D Given , `(9)^(2x+4)=(243)^(2x-3.2)` `rArr (3)^(4x+8)=(3)^(10x-16)` `rArr 4x+8=10x-16` `rArr 6x=24rArr x=4` Hence the correct option is (d). |
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