Question

5^n+3 - 6 x 5^n+1 / 9 + 5^n x 2^2

Answer 1

Answer:

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Answer 2

Answer:

5^n+3-6×5^n+1/9+5^n×2^2=5^n+5^n×5^n+3-6×2^2+1/9= 10^n×5^n-3×2^2+1/9=50^2n-12+1/9=50^2n-109/9