en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

9^{n+1}-2*9^n=7

Solution

9^{n + 1} - 2 \cdot 9^{n} = 7

Solution

n = 0

Solution steps

9^{n + 1} - 2 \cdot 9^{n} = 7

Factor

9^{n + 1} - 2 \cdot 9^{n} : 7 \cdot 9^{n}

7 \cdot 9^{n} = 7

Divide both sides by

7

9^{n} = 1

Apply exponent rules

n ln (9) = ln (1)

Solve

n ln (9) = ln (1) : n = 0

n = 0

Popular Examples

\frac{8}{3} = 2^{r}

(4^{x+2})/(3^{x+1)}=16

\frac{4 ^{x + 2}}{3 ^{x + 1}} = 16

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

7^{x-1}+7^x=2744

7^{x - 1} + 7^{x} = 2744

1/8 = 4/(2^{t/7)}

\frac{1}{8} = \frac{4}{2 ^{\frac{t}{7}}}

Frequently Asked Questions (FAQ)

What is the answer to 9^{n+1}-2*9^n=7 ?
The answer to 9^{n+1}-2*9^n=7 is n=0
Solve for n: 9^{n+1}-2*9^n=7
The solution is n=0