What is the answer to 20=sqrt(-x^2+40x) ?

The answer to 20=sqrt(-x^2+40x) is x=20

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20=sqrt(-x^2+40x)

20 = - x^{2} + 40 x

x = 20

Solution steps

20 = - x^{2} + 40 x

Square both sides:

400 = - x^{2} + 40 x

400 = - x^{2} + 40 x

Solve

400 = - x^{2} + 40 x : x = 20

x = 20

Verify Solutions:

x = 20

True

The solution is

x = 20

x - 1 = x + 1

4 (x - 2)^{\frac{2}{3}} = 64

3 x^{2} - 2 x - 7 = x - 1

x + 1 = x + 3

x + 1 = x + 4

What is the answer to 20=sqrt(-x^2+40x) ?
The answer to 20=sqrt(-x^2+40x) is x=20
Solve for x: 20=sqrt(-x^2+40x)
The solution is x=20