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Popular >

sqrt(40-x^2)=3x

Solution

40 - x^{2} = 3 x

Solution

x = 2

Solution steps

40 - x^{2} = 3 x

Square both sides:

40 - x^{2} = 9 x^{2}

40 - x^{2} = 9 x^{2}

Solve

40 - x^{2} = 9 x^{2} : x = 2, x = - 2

x = 2, x = - 2

Verify Solutions:

x = 2

True

, x = - 2

False

The solution is

x = 2

Graph

Popular Examples

sqrt(x+5)-1=sqrt(4x-12)

x + 5 - 1 = 4 x - 12

sqrt(x^2-1)=x-sqrt(x-1)

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

6-\sqrt[3]{x-5}=1

6 - 3 x - 5 = 1

x=1+sqrt(x^2+9)

x = 1 + x^{2} + 9

3x^{2/3}-20x^{1/3}-7=0

3 x^{\frac{2}{3}} - 20 x^{\frac{1}{3}} - 7 = 0

Frequently Asked Questions (FAQ)

What is the answer to sqrt(40-x^2)=3x ?
The answer to sqrt(40-x^2)=3x is x=2
Solve for x: sqrt(40-x^2)=3x
The solution is x=2