125=15x+-1x^2

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Solution for 125=15x+-1x^2 equation:


Simplifying
125 = 15x + -1x2

Solving
125 = 15x + -1x2

Solving for variable 'x'.

Reorder the terms:
125 + -15x + x2 = 15x + -15x + -1x2 + x2

Combine like terms: 15x + -15x = 0
125 + -15x + x2 = 0 + -1x2 + x2
125 + -15x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
125 + -15x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-125' to each side of the equation.
125 + -15x + -125 + x2 = 0 + -125

Reorder the terms:
125 + -125 + -15x + x2 = 0 + -125

Combine like terms: 125 + -125 = 0
0 + -15x + x2 = 0 + -125
-15x + x2 = 0 + -125

Combine like terms: 0 + -125 = -125
-15x + x2 = -125

The x term is -15x.  Take half its coefficient (-7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
-15x + 56.25 + x2 = -125 + 56.25

Reorder the terms:
56.25 + -15x + x2 = -125 + 56.25

Combine like terms: -125 + 56.25 = -68.75
56.25 + -15x + x2 = -68.75

Factor a perfect square on the left side:
(x + -7.5)(x + -7.5) = -68.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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