2x^2-7x+28=-10x^2+13x+15

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Solution for 2x^2-7x+28=-10x^2+13x+15 equation:


Simplifying
2x2 + -7x + 28 = -10x2 + 13x + 15

Reorder the terms:
28 + -7x + 2x2 = -10x2 + 13x + 15

Reorder the terms:
28 + -7x + 2x2 = 15 + 13x + -10x2

Solving
28 + -7x + 2x2 = 15 + 13x + -10x2

Solving for variable 'x'.

Reorder the terms:
28 + -15 + -7x + -13x + 2x2 + 10x2 = 15 + 13x + -10x2 + -15 + -13x + 10x2

Combine like terms: 28 + -15 = 13
13 + -7x + -13x + 2x2 + 10x2 = 15 + 13x + -10x2 + -15 + -13x + 10x2

Combine like terms: -7x + -13x = -20x
13 + -20x + 2x2 + 10x2 = 15 + 13x + -10x2 + -15 + -13x + 10x2

Combine like terms: 2x2 + 10x2 = 12x2
13 + -20x + 12x2 = 15 + 13x + -10x2 + -15 + -13x + 10x2

Reorder the terms:
13 + -20x + 12x2 = 15 + -15 + 13x + -13x + -10x2 + 10x2

Combine like terms: 15 + -15 = 0
13 + -20x + 12x2 = 0 + 13x + -13x + -10x2 + 10x2
13 + -20x + 12x2 = 13x + -13x + -10x2 + 10x2

Combine like terms: 13x + -13x = 0
13 + -20x + 12x2 = 0 + -10x2 + 10x2
13 + -20x + 12x2 = -10x2 + 10x2

Combine like terms: -10x2 + 10x2 = 0
13 + -20x + 12x2 = 0

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

Divide each side by '12'.
1.083333333 + -1.666666667x + x2 = 0

Move the constant term to the right:

Add '-1.083333333' to each side of the equation.
1.083333333 + -1.666666667x + -1.083333333 + x2 = 0 + -1.083333333

Reorder the terms:
1.083333333 + -1.083333333 + -1.666666667x + x2 = 0 + -1.083333333

Combine like terms: 1.083333333 + -1.083333333 = 0.000000000
0.000000000 + -1.666666667x + x2 = 0 + -1.083333333
-1.666666667x + x2 = 0 + -1.083333333

Combine like terms: 0 + -1.083333333 = -1.083333333
-1.666666667x + x2 = -1.083333333

The x term is -1.666666667x.  Take half its coefficient (-0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
-1.666666667x + 0.6944444447 + x2 = -1.083333333 + 0.6944444447

Reorder the terms:
0.6944444447 + -1.666666667x + x2 = -1.083333333 + 0.6944444447

Combine like terms: -1.083333333 + 0.6944444447 = -0.3888888883
0.6944444447 + -1.666666667x + x2 = -0.3888888883

Factor a perfect square on the left side:
(x + -0.8333333335)(x + -0.8333333335) = -0.3888888883

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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