solve 9 to power X + 78 is equal to 3 power 2 X + 3
Answers
Answered by
8
Answer:
x = -1/2
Step-by-step explanation:
9^x + 78 = 3^(2x+3)
3^2x - 3^(2x+3) = 78
3^2x(1-3^3) = 78
3^2x(-26) = 78
3^2x(-1) = 3
-3^2x = 3
-2x = 1
x = -1/2
Answered by
2
Answer:
X=1/2
Step-by-step explanation:
Let us take X=Y to avoid confusion with multiplication sign
9^Y + 78 = 9^Y x 27
26 x 9^Y = 78
9^Y = 3
Y=X=1/2 Answer
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