-x(x-3)=70

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Solution for -x(x-3)=70 equation:


Simplifying
-1x(x + -3) = 70

Reorder the terms:
-1x(-3 + x) = 70
(-3 * -1x + x * -1x) = 70
(3x + -1x2) = 70

Solving
3x + -1x2 = 70

Solving for variable 'x'.

Reorder the terms:
-70 + 3x + -1x2 = 70 + -70

Combine like terms: 70 + -70 = 0
-70 + 3x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
70 + -3x + x2 = 0

Move the constant term to the right:

Add '-70' to each side of the equation.
70 + -3x + -70 + x2 = 0 + -70

Reorder the terms:
70 + -70 + -3x + x2 = 0 + -70

Combine like terms: 70 + -70 = 0
0 + -3x + x2 = 0 + -70
-3x + x2 = 0 + -70

Combine like terms: 0 + -70 = -70
-3x + x2 = -70

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = -70 + 2.25

Reorder the terms:
2.25 + -3x + x2 = -70 + 2.25

Combine like terms: -70 + 2.25 = -67.75
2.25 + -3x + x2 = -67.75

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = -67.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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