49^4=7 ^a, find the value of a

1.	49^4=7 ^a, find the value of a
Answer» 49^4=7^a.= (7^2)^4=7^a=7^8=7^aNow we will cancel the base 7 wich is in both side. Now,=7^8=7^a =8=a A=8. Ans

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