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Popular >

9^{n+1}-9^n=72

Solution

9^{n + 1} - 9^{n} = 72

Solution

n = 1

Solution steps

9^{n + 1} - 9^{n} = 72

Factor

9^{n + 1} - 9^{n} : 8 \cdot 9^{n}

8 \cdot 9^{n} = 72

Divide both sides by

8

9^{n} = 9

Apply exponent rules

n = 1

Popular Examples

solvefor x,(x/(10))-a*e^{-x/((r*t))}=0 solve for

x, (\frac{x}{10}) - a \cdot e^{- \frac{x}{( r \cdot t )}} = 0

n = 1 + (\frac{9}{10})^{n}

sqrt((3/5)^{1-2x)}= 417/27

(\frac{3}{5})^{1 - 2 x} = \frac{417}{27}

2^2x+3+2^x+3=1+2^x

2^{2} x + 3 + 2^{x} + 3 = 1 + 2^{x}

(1/32)^{x+2}=8^{x+1}

(\frac{1}{32})^{x + 2} = 8^{x + 1}

Frequently Asked Questions (FAQ)

What is the answer to 9^{n+1}-9^n=72 ?
The answer to 9^{n+1}-9^n=72 is n=1
Solve for n: 9^{n+1}-9^n=72
The solution is n=1