x^2+7x+6-(-x^2+10x-7)=

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Solution for x^2+7x+6-(-x^2+10x-7)= equation:


Simplifying
x2 + 7x + 6 + -1(-1x2 + 10x + -7) = 0

Reorder the terms:
x2 + 7x + 6 + -1(-7 + 10x + -1x2) = 0
x2 + 7x + 6 + (-7 * -1 + 10x * -1 + -1x2 * -1) = 0
x2 + 7x + 6 + (7 + -10x + 1x2) = 0

Reorder the terms:
6 + 7 + 7x + -10x + x2 + 1x2 = 0

Combine like terms: 6 + 7 = 13
13 + 7x + -10x + x2 + 1x2 = 0

Combine like terms: 7x + -10x = -3x
13 + -3x + x2 + 1x2 = 0

Combine like terms: x2 + 1x2 = 2x2
13 + -3x + 2x2 = 0

Solving
13 + -3x + 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'.
6.5 + -1.5x + x2 = 0

Move the constant term to the right:

Add '-6.5' to each side of the equation.
6.5 + -1.5x + -6.5 + x2 = 0 + -6.5

Reorder the terms:
6.5 + -6.5 + -1.5x + x2 = 0 + -6.5

Combine like terms: 6.5 + -6.5 = 0.0
0.0 + -1.5x + x2 = 0 + -6.5
-1.5x + x2 = 0 + -6.5

Combine like terms: 0 + -6.5 = -6.5
-1.5x + x2 = -6.5

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = -6.5 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = -6.5 + 0.5625

Combine like terms: -6.5 + 0.5625 = -5.9375
0.5625 + -1.5x + x2 = -5.9375

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = -5.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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