If 9 x 2 240 9 x then x
Asked by admin @ in Math viewed by 359 People
If 9^x+2 = 240 + 9^x then x =
Answered by admin @
9^(x + 2) = 240 + 9^x
9^x.9² = 240 + 9^x
81.9^x = 240 + 9^x
9^x(81 - 1) = 240
9^x .80 = 240
9^x = 3
3^2x = 3¹
[ use, x^m = x^n then, m = n ]
2x = 1
x = 1/2
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