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2^x-3×3^2x-8=36 find the value of x |
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Answer» Answer: 2 x−3 ×3 2x−8 =4×9 2 x−3 ×3 2x−8 =2 2 ×3 2
2 x−5 ×3 2x−10 =1 x=5 as RHS is 1, the POWERS have to be zero on the LHS as ANYTHING raise to 0 is ALWAYS 1 Thus x−5=0→x=5 |
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