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Question Number 152844 by bobhans last updated on 02/Sep/21
simplify ((3^x + 63)/(21^(x−2) + 7^(x−1) ))
simplify3x+6321x−2+7x−1
Answered by Rasheed.Sindhi last updated on 02/Sep/21
((3^x + 63)/(21^(x−2) + 7^(x−1) )) ((3^x + 3^2 ×7)/((3×7)^(x−2) + 7^(x−1) )) ((3^2 (3^(x−2) + 7))/(7^(x−2) (3^(x−2) + 7))) =(9/7^(x−2) )
3x+6321x−2+7x−13x+32×7(3×7)x−2+7x−132(3x−2+7)7x−2(3x−2+7)=97x−2

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