9^(x+2)=240+9^x
Simplify
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Answered by
0
Step-by-step explanation:
answer is 1/2 explained above
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Answered by
0
Answer:
1/2
Step-by-step explanation:
9^(x+2) - 9^x =240
=> 9^x.(9²-1)=240
=> 9^x=240/80
=> 9^x = 3
=> 9^x = 9^½
=> x=1/2
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