20=-9.75x^2+26x

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Solution for 20=-9.75x^2+26x equation:


Simplifying
20 = -9.75x2 + 26x

Reorder the terms:
20 = 26x + -9.75x2

Solving
20 = 26x + -9.75x2

Solving for variable 'x'.

Reorder the terms:
20 + -26x + 9.75x2 = 26x + -26x + -9.75x2 + 9.75x2

Combine like terms: 26x + -26x = 0
20 + -26x + 9.75x2 = 0 + -9.75x2 + 9.75x2
20 + -26x + 9.75x2 = -9.75x2 + 9.75x2

Combine like terms: -9.75x2 + 9.75x2 = 0.00
20 + -26x + 9.75x2 = 0.00

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

Divide each side by '9.75'.
2.051282051 + -2.666666667x + x2 = 0

Move the constant term to the right:

Add '-2.051282051' to each side of the equation.
2.051282051 + -2.666666667x + -2.051282051 + x2 = 0 + -2.051282051

Reorder the terms:
2.051282051 + -2.051282051 + -2.666666667x + x2 = 0 + -2.051282051

Combine like terms: 2.051282051 + -2.051282051 = 0.000000000
0.000000000 + -2.666666667x + x2 = 0 + -2.051282051
-2.666666667x + x2 = 0 + -2.051282051

Combine like terms: 0 + -2.051282051 = -2.051282051
-2.666666667x + x2 = -2.051282051

The x term is -2.666666667x.  Take half its coefficient (-1.333333334).
Square it (1.777777780) and add it to both sides.

Add '1.777777780' to each side of the equation.
-2.666666667x + 1.777777780 + x2 = -2.051282051 + 1.777777780

Reorder the terms:
1.777777780 + -2.666666667x + x2 = -2.051282051 + 1.777777780

Combine like terms: -2.051282051 + 1.777777780 = -0.273504271
1.777777780 + -2.666666667x + x2 = -0.273504271

Factor a perfect square on the left side:
(x + -1.333333334)(x + -1.333333334) = -0.273504271

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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