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Popular >

3^x+3^{x+2}=90

Solution

3^{x} + 3^{x + 2} = 90

Solution

x = 2

Solution steps

3^{x} + 3^{x + 2} = 90

Factor

3^{x} + 3^{x + 2} : 10 \cdot 3^{x}

10 \cdot 3^{x} = 90

Divide both sides by

10

3^{x} = 9

Apply exponent rules

x = 2

Popular Examples

1 0^{x} = 31

1 0^{x} = 87

2 5^{3 x + 2} = 125

3^{x} + 5 \cdot 3^{x} = 54

x^210^x-x10^x=2(10^x)

x^{2} 1 0^{x} - x 1 0^{x} = 2 (1 0^{x})

Frequently Asked Questions (FAQ)

What is the answer to 3^x+3^{x+2}=90 ?
The answer to 3^x+3^{x+2}=90 is x=2
Solve for x: 3^x+3^{x+2}=90
The solution is x=2