20=-(x^2)+1.12x

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Solution for 20=-(x^2)+1.12x equation:


Simplifying
20 = -1(x2) + 1.12x

Reorder the terms:
20 = 1.12x + -1x2

Solving
20 = 1.12x + -1x2

Solving for variable 'x'.

Reorder the terms:
20 + -1.12x + x2 = 1.12x + -1.12x + -1x2 + x2

Combine like terms: 1.12x + -1.12x = 0.00
20 + -1.12x + x2 = 0.00 + -1x2 + x2
20 + -1.12x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
20 + -1.12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-20' to each side of the equation.
20 + -1.12x + -20 + x2 = 0 + -20

Reorder the terms:
20 + -20 + -1.12x + x2 = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -1.12x + x2 = 0 + -20
-1.12x + x2 = 0 + -20

Combine like terms: 0 + -20 = -20
-1.12x + x2 = -20

The x term is -1.12x.  Take half its coefficient (-0.56).
Square it (0.3136) and add it to both sides.

Add '0.3136' to each side of the equation.
-1.12x + 0.3136 + x2 = -20 + 0.3136

Reorder the terms:
0.3136 + -1.12x + x2 = -20 + 0.3136

Combine like terms: -20 + 0.3136 = -19.6864
0.3136 + -1.12x + x2 = -19.6864

Factor a perfect square on the left side:
(x + -0.56)(x + -0.56) = -19.6864

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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