(3x^2-4x+1)-(-x^2+x-9)=

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Solution for (3x^2-4x+1)-(-x^2+x-9)= equation:


Simplifying
(3x2 + -4x + 1) + -1(-1x2 + x + -9) = 0

Reorder the terms:
(1 + -4x + 3x2) + -1(-1x2 + x + -9) = 0

Remove parenthesis around (1 + -4x + 3x2)
1 + -4x + 3x2 + -1(-1x2 + x + -9) = 0

Reorder the terms:
1 + -4x + 3x2 + -1(-9 + x + -1x2) = 0
1 + -4x + 3x2 + (-9 * -1 + x * -1 + -1x2 * -1) = 0
1 + -4x + 3x2 + (9 + -1x + 1x2) = 0

Reorder the terms:
1 + 9 + -4x + -1x + 3x2 + 1x2 = 0

Combine like terms: 1 + 9 = 10
10 + -4x + -1x + 3x2 + 1x2 = 0

Combine like terms: -4x + -1x = -5x
10 + -5x + 3x2 + 1x2 = 0

Combine like terms: 3x2 + 1x2 = 4x2
10 + -5x + 4x2 = 0

Solving
10 + -5x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
2.5 + -1.25x + x2 = 0

Move the constant term to the right:

Add '-2.5' to each side of the equation.
2.5 + -1.25x + -2.5 + x2 = 0 + -2.5

Reorder the terms:
2.5 + -2.5 + -1.25x + x2 = 0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + -1.25x + x2 = 0 + -2.5
-1.25x + x2 = 0 + -2.5

Combine like terms: 0 + -2.5 = -2.5
-1.25x + x2 = -2.5

The x term is -1.25x.  Take half its coefficient (-0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
-1.25x + 0.390625 + x2 = -2.5 + 0.390625

Reorder the terms:
0.390625 + -1.25x + x2 = -2.5 + 0.390625

Combine like terms: -2.5 + 0.390625 = -2.109375
0.390625 + -1.25x + x2 = -2.109375

Factor a perfect square on the left side:
(x + -0.625)(x + -0.625) = -2.109375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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