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Popular >

sqrt(42-x)=x

Solution

42 - x = x

Solution

x = 6

Solution steps

42 - x = x

Square both sides:

42 - x = x^{2}

42 - x = x^{2}

Solve

42 - x = x^{2} : x = 6, x = - 7

x = 6, x = - 7

Verify Solutions:

x = 6

True

, x = - 7

False

The solution is

x = 6

Popular Examples

sqrt(y)+sqrt(y+8)=3

y + y + 8 = 3

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

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

(3x+4)/(2sqrt(2+x))=0

\frac{3 x + 4}{2 2 + x} = 0

solvefor x,f(x-3)=sqrt(x-3)-3 solve for

x, f (x - 3) = x - 3 - 3

x - 4 x - 7 = 3

Frequently Asked Questions (FAQ)

What is the answer to sqrt(42-x)=x ?
The answer to sqrt(42-x)=x is x=6
Solve for x: sqrt(42-x)=x
The solution is x=6