-9x^2+18x=16

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Solution for -9x^2+18x=16 equation:


Simplifying
-9x2 + 18x = 16

Reorder the terms:
18x + -9x2 = 16

Solving
18x + -9x2 = 16

Solving for variable 'x'.

Reorder the terms:
-16 + 18x + -9x2 = 16 + -16

Combine like terms: 16 + -16 = 0
-16 + 18x + -9x2 = 0

Begin completing the square.  Divide all terms by
-9 the coefficient of the squared term: 

Divide each side by '-9'.
1.777777778 + -2x + x2 = 0

Move the constant term to the right:

Add '-1.777777778' to each side of the equation.
1.777777778 + -2x + -1.777777778 + x2 = 0 + -1.777777778

Reorder the terms:
1.777777778 + -1.777777778 + -2x + x2 = 0 + -1.777777778

Combine like terms: 1.777777778 + -1.777777778 = 0.000000000
0.000000000 + -2x + x2 = 0 + -1.777777778
-2x + x2 = 0 + -1.777777778

Combine like terms: 0 + -1.777777778 = -1.777777778
-2x + x2 = -1.777777778

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -1.777777778 + 1

Reorder the terms:
1 + -2x + x2 = -1.777777778 + 1

Combine like terms: -1.777777778 + 1 = -0.777777778
1 + -2x + x2 = -0.777777778

Factor a perfect square on the left side:
(x + -1)(x + -1) = -0.777777778

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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