0.5x^2-10x+125=40

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Solution for 0.5x^2-10x+125=40 equation:


Simplifying
0.5x2 + -10x + 125 = 40

Reorder the terms:
125 + -10x + 0.5x2 = 40

Solving
125 + -10x + 0.5x2 = 40

Solving for variable 'x'.

Reorder the terms:
125 + -40 + -10x + 0.5x2 = 40 + -40

Combine like terms: 125 + -40 = 85
85 + -10x + 0.5x2 = 40 + -40

Combine like terms: 40 + -40 = 0
85 + -10x + 0.5x2 = 0

Begin completing the square.  Divide all terms by
0.5 the coefficient of the squared term: 

Divide each side by '0.5'.
170 + -20x + x2 = 0

Move the constant term to the right:

Add '-170' to each side of the equation.
170 + -20x + -170 + x2 = 0 + -170

Reorder the terms:
170 + -170 + -20x + x2 = 0 + -170

Combine like terms: 170 + -170 = 0
0 + -20x + x2 = 0 + -170
-20x + x2 = 0 + -170

Combine like terms: 0 + -170 = -170
-20x + x2 = -170

The x term is -20x.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20x + 100 + x2 = -170 + 100

Reorder the terms:
100 + -20x + x2 = -170 + 100

Combine like terms: -170 + 100 = -70
100 + -20x + x2 = -70

Factor a perfect square on the left side:
(x + -10)(x + -10) = -70

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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