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Find value of x if 5^x +5^×-1=750

Posted by Navreet Chawla 5 years, 2 months ago

CBSE > Class 09 > Mathematics

1 answers

Mitanshu Khandal 5 years, 2 months ago

5^x + 5^x-1=750 now taking 5^x common. 5^x (1+5^-1)=750 5^x(1+1/5)=750 5^x * 6/5 = 750 Now transposing 6/5 to RHS 5^x = 625 5^x=5^4 By comparing, we get x=4

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CBSE > Class 09 > Mathematics