solve'x' if 9^x+2=240+9^x
Answers
Answered by
2
Answer:
Answered by
0
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
Similar questions
Math,
5 months ago
English,
5 months ago
English,
10 months ago
Accountancy,
10 months ago
English,
1 year ago