60=-x^2+4x

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Solution for 60=-x^2+4x equation:


Simplifying
60 = -1x2 + 4x

Reorder the terms:
60 = 4x + -1x2

Solving
60 = 4x + -1x2

Solving for variable 'x'.

Reorder the terms:
60 + -4x + x2 = 4x + -4x + -1x2 + x2

Combine like terms: 4x + -4x = 0
60 + -4x + x2 = 0 + -1x2 + x2
60 + -4x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
60 + -4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-60' to each side of the equation.
60 + -4x + -60 + x2 = 0 + -60

Reorder the terms:
60 + -60 + -4x + x2 = 0 + -60

Combine like terms: 60 + -60 = 0
0 + -4x + x2 = 0 + -60
-4x + x2 = 0 + -60

Combine like terms: 0 + -60 = -60
-4x + x2 = -60

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = -60 + 4

Reorder the terms:
4 + -4x + x2 = -60 + 4

Combine like terms: -60 + 4 = -56
4 + -4x + x2 = -56

Factor a perfect square on the left side:
(x + -2)(x + -2) = -56

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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