-4x^2+6x=9

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Solution for -4x^2+6x=9 equation:


Simplifying
-4x2 + 6x = 9

Reorder the terms:
6x + -4x2 = 9

Solving
6x + -4x2 = 9

Solving for variable 'x'.

Reorder the terms:
-9 + 6x + -4x2 = 9 + -9

Combine like terms: 9 + -9 = 0
-9 + 6x + -4x2 = 0

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

Divide each side by '-4'.
2.25 + -1.5x + x2 = 0

Move the constant term to the right:

Add '-2.25' to each side of the equation.
2.25 + -1.5x + -2.25 + x2 = 0 + -2.25

Reorder the terms:
2.25 + -2.25 + -1.5x + x2 = 0 + -2.25

Combine like terms: 2.25 + -2.25 = 0.00
0.00 + -1.5x + x2 = 0 + -2.25
-1.5x + x2 = 0 + -2.25

Combine like terms: 0 + -2.25 = -2.25
-1.5x + x2 = -2.25

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = -2.25 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = -2.25 + 0.5625

Combine like terms: -2.25 + 0.5625 = -1.6875
0.5625 + -1.5x + x2 = -1.6875

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = -1.6875

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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