(8x^2+3x-5)+(x^2-4x+7)=

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Solution for (8x^2+3x-5)+(x^2-4x+7)= equation:


Simplifying
(8x2 + 3x + -5) + (x2 + -4x + 7) = 0

Reorder the terms:
(-5 + 3x + 8x2) + (x2 + -4x + 7) = 0

Remove parenthesis around (-5 + 3x + 8x2)
-5 + 3x + 8x2 + (x2 + -4x + 7) = 0

Reorder the terms:
-5 + 3x + 8x2 + (7 + -4x + x2) = 0

Remove parenthesis around (7 + -4x + x2)
-5 + 3x + 8x2 + 7 + -4x + x2 = 0

Reorder the terms:
-5 + 7 + 3x + -4x + 8x2 + x2 = 0

Combine like terms: -5 + 7 = 2
2 + 3x + -4x + 8x2 + x2 = 0

Combine like terms: 3x + -4x = -1x
2 + -1x + 8x2 + x2 = 0

Combine like terms: 8x2 + x2 = 9x2
2 + -1x + 9x2 = 0

Solving
2 + -1x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
0.2222222222 + -0.1111111111x + x2 = 0

Move the constant term to the right:

Add '-0.2222222222' to each side of the equation.
0.2222222222 + -0.1111111111x + -0.2222222222 + x2 = 0 + -0.2222222222

Reorder the terms:
0.2222222222 + -0.2222222222 + -0.1111111111x + x2 = 0 + -0.2222222222

Combine like terms: 0.2222222222 + -0.2222222222 = 0.0000000000
0.0000000000 + -0.1111111111x + x2 = 0 + -0.2222222222
-0.1111111111x + x2 = 0 + -0.2222222222

Combine like terms: 0 + -0.2222222222 = -0.2222222222
-0.1111111111x + x2 = -0.2222222222

The x term is -0.1111111111x.  Take half its coefficient (-0.05555555555).
Square it (0.003086419752) and add it to both sides.

Add '0.003086419752' to each side of the equation.
-0.1111111111x + 0.003086419752 + x2 = -0.2222222222 + 0.003086419752

Reorder the terms:
0.003086419752 + -0.1111111111x + x2 = -0.2222222222 + 0.003086419752

Combine like terms: -0.2222222222 + 0.003086419752 = -0.219135802448
0.003086419752 + -0.1111111111x + x2 = -0.219135802448

Factor a perfect square on the left side:
(x + -0.05555555555)(x + -0.05555555555) = -0.219135802448

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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