(-7x+3)+(-2x^2+12x-7)=

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Solution for (-7x+3)+(-2x^2+12x-7)= equation:


Simplifying
(-7x + 3) + (-2x2 + 12x + -7) = 0

Reorder the terms:
(3 + -7x) + (-2x2 + 12x + -7) = 0

Remove parenthesis around (3 + -7x)
3 + -7x + (-2x2 + 12x + -7) = 0

Reorder the terms:
3 + -7x + (-7 + 12x + -2x2) = 0

Remove parenthesis around (-7 + 12x + -2x2)
3 + -7x + -7 + 12x + -2x2 = 0

Reorder the terms:
3 + -7 + -7x + 12x + -2x2 = 0

Combine like terms: 3 + -7 = -4
-4 + -7x + 12x + -2x2 = 0

Combine like terms: -7x + 12x = 5x
-4 + 5x + -2x2 = 0

Solving
-4 + 5x + -2x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
2 + -2.5x + x2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -2.5x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + -2.5x + x2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -2.5x + x2 = 0 + -2
-2.5x + x2 = 0 + -2

Combine like terms: 0 + -2 = -2
-2.5x + x2 = -2

The x term is -2.5x.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5x + 1.5625 + x2 = -2 + 1.5625

Reorder the terms:
1.5625 + -2.5x + x2 = -2 + 1.5625

Combine like terms: -2 + 1.5625 = -0.4375
1.5625 + -2.5x + x2 = -0.4375

Factor a perfect square on the left side:
(x + -1.25)(x + -1.25) = -0.4375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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