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

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


Simplifying
(3x2 + -2x + 4) + -1(-5x2 + 3x + -8) = 0

Reorder the terms:
(4 + -2x + 3x2) + -1(-5x2 + 3x + -8) = 0

Remove parenthesis around (4 + -2x + 3x2)
4 + -2x + 3x2 + -1(-5x2 + 3x + -8) = 0

Reorder the terms:
4 + -2x + 3x2 + -1(-8 + 3x + -5x2) = 0
4 + -2x + 3x2 + (-8 * -1 + 3x * -1 + -5x2 * -1) = 0
4 + -2x + 3x2 + (8 + -3x + 5x2) = 0

Reorder the terms:
4 + 8 + -2x + -3x + 3x2 + 5x2 = 0

Combine like terms: 4 + 8 = 12
12 + -2x + -3x + 3x2 + 5x2 = 0

Combine like terms: -2x + -3x = -5x
12 + -5x + 3x2 + 5x2 = 0

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

Solving
12 + -5x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
1.5 + -0.625x + x2 = 0

Move the constant term to the right:

Add '-1.5' to each side of the equation.
1.5 + -0.625x + -1.5 + x2 = 0 + -1.5

Reorder the terms:
1.5 + -1.5 + -0.625x + x2 = 0 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + -0.625x + x2 = 0 + -1.5
-0.625x + x2 = 0 + -1.5

Combine like terms: 0 + -1.5 = -1.5
-0.625x + x2 = -1.5

The x term is -0.625x.  Take half its coefficient (-0.3125).
Square it (0.09765625) and add it to both sides.

Add '0.09765625' to each side of the equation.
-0.625x + 0.09765625 + x2 = -1.5 + 0.09765625

Reorder the terms:
0.09765625 + -0.625x + x2 = -1.5 + 0.09765625

Combine like terms: -1.5 + 0.09765625 = -1.40234375
0.09765625 + -0.625x + x2 = -1.40234375

Factor a perfect square on the left side:
(x + -0.3125)(x + -0.3125) = -1.40234375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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