Question

Find the value of x 9^x+2= 240 +9^x

Answer 1

Answer:

x=0.

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Answer 2

Answer:

0.5

Step-by-step explanation:

9^(x + 2) = 240 + 9^x

9^x.9² = 240 + 9^x

81.9^x = 240 + 9^x

81.9^x-9^x=240

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

  =0.5