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5^-5/7^-5. ×. 7^-7 / 5^-7
5^-5=1/5^5
apply it to all
then it will like. 7^5/5^5 × 5^7/7^7
calculate it
5^-5=1/5^5
apply it to all
then it will like. 7^5/5^5 × 5^7/7^7
calculate it
Answered by
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×= (7/5)^5 × (5/7)^7= (5/7)^2= 25/49
now 2x+1= 2×25/49 +1
50/49+1 = 99/49
now 2x+1= 2×25/49 +1
50/49+1 = 99/49
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