(-7x^2+5)-(12x^2-5x+8)=

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Solution for (-7x^2+5)-(12x^2-5x+8)= equation:


Simplifying
(-7x2 + 5) + -1(12x2 + -5x + 8) = 0

Reorder the terms:
(5 + -7x2) + -1(12x2 + -5x + 8) = 0

Remove parenthesis around (5 + -7x2)
5 + -7x2 + -1(12x2 + -5x + 8) = 0

Reorder the terms:
5 + -7x2 + -1(8 + -5x + 12x2) = 0
5 + -7x2 + (8 * -1 + -5x * -1 + 12x2 * -1) = 0
5 + -7x2 + (-8 + 5x + -12x2) = 0

Reorder the terms:
5 + -8 + 5x + -7x2 + -12x2 = 0

Combine like terms: 5 + -8 = -3
-3 + 5x + -7x2 + -12x2 = 0

Combine like terms: -7x2 + -12x2 = -19x2
-3 + 5x + -19x2 = 0

Solving
-3 + 5x + -19x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-19 the coefficient of the squared term: 

Divide each side by '-19'.
0.1578947368 + -0.2631578947x + x2 = 0

Move the constant term to the right:

Add '-0.1578947368' to each side of the equation.
0.1578947368 + -0.2631578947x + -0.1578947368 + x2 = 0 + -0.1578947368

Reorder the terms:
0.1578947368 + -0.1578947368 + -0.2631578947x + x2 = 0 + -0.1578947368

Combine like terms: 0.1578947368 + -0.1578947368 = 0.0000000000
0.0000000000 + -0.2631578947x + x2 = 0 + -0.1578947368
-0.2631578947x + x2 = 0 + -0.1578947368

Combine like terms: 0 + -0.1578947368 = -0.1578947368
-0.2631578947x + x2 = -0.1578947368

The x term is -0.2631578947x.  Take half its coefficient (-0.1315789474).
Square it (0.01731301940) and add it to both sides.

Add '0.01731301940' to each side of the equation.
-0.2631578947x + 0.01731301940 + x2 = -0.1578947368 + 0.01731301940

Reorder the terms:
0.01731301940 + -0.2631578947x + x2 = -0.1578947368 + 0.01731301940

Combine like terms: -0.1578947368 + 0.01731301940 = -0.1405817174
0.01731301940 + -0.2631578947x + x2 = -0.1405817174

Factor a perfect square on the left side:
(x + -0.1315789474)(x + -0.1315789474) = -0.1405817174

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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