1.

7 is to the power x+1 - 7 is to the power x-1= 48 find x​

Answer»

ANSWER:x=1

Step-by-step explanation:

7^(x+1)-7^(x-1)=48

Or, 7^x*7^1-7^x*7^(-1)=48

Or, 7^x*7-7^x*(1/7)=48

Or, 7×7^x-(7^x/7)=48

Or, 49×7^x-7^x=48×7

Or, 7^x(49-1)=48×7

Or, 7^x=7

Therefore x=1


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