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Popular >

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

Solution

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

Solution

x = 3

Solution steps

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

Factor

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

5 \cdot 2^{x} = 40

Divide both sides by

5

2^{x} = 8

Apply exponent rules

x = 3

Popular Examples

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

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

5^{3 x} = 625

22 = 100 - 80 e^{x}

3^{2 x + 1} - 5 = 16

Frequently Asked Questions (FAQ)

What is the answer to 2^{x+2}+2^x=40 ?
The answer to 2^{x+2}+2^x=40 is x=3
Solve for x: 2^{x+2}+2^x=40
The solution is x=3