en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

2^{x+2}+2^x=20

Solution

2^{x + 2} + 2^{x} = 20

Solution

x = 2

Solution steps

2^{x + 2} + 2^{x} = 20

Factor

2^{x + 2} + 2^{x} : 5 \cdot 2^{x}

5 \cdot 2^{x} = 20

Divide both sides by

5

2^{x} = 4

Apply exponent rules

x = 2

Popular Examples

0 = - 2^{2 - b} + 2

2^{x + 2} + 2^{x} = 40

- 3 \cdot 3^{5 b} = - 83

2^{2 x} = 8^{x - 1}

5^{3 x} = 625

Frequently Asked Questions (FAQ)

What is the answer to 2^{x+2}+2^x=20 ?
The answer to 2^{x+2}+2^x=20 is x=2
Solve for x: 2^{x+2}+2^x=20
The solution is x=2