-4x^2=-9x+12

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Solution for -4x^2=-9x+12 equation:


Simplifying
-4x2 = -9x + 12

Reorder the terms:
-4x2 = 12 + -9x

Solving
-4x2 = 12 + -9x

Solving for variable 'x'.

Reorder the terms:
-12 + 9x + -4x2 = 12 + -9x + -12 + 9x

Reorder the terms:
-12 + 9x + -4x2 = 12 + -12 + -9x + 9x

Combine like terms: 12 + -12 = 0
-12 + 9x + -4x2 = 0 + -9x + 9x
-12 + 9x + -4x2 = -9x + 9x

Combine like terms: -9x + 9x = 0
-12 + 9x + -4x2 = 0

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

Divide each side by '-4'.
3 + -2.25x + x2 = 0

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -2.25x + -3 + x2 = 0 + -3

Reorder the terms:
3 + -3 + -2.25x + x2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -2.25x + x2 = 0 + -3
-2.25x + x2 = 0 + -3

Combine like terms: 0 + -3 = -3
-2.25x + x2 = -3

The x term is -2.25x.  Take half its coefficient (-1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
-2.25x + 1.265625 + x2 = -3 + 1.265625

Reorder the terms:
1.265625 + -2.25x + x2 = -3 + 1.265625

Combine like terms: -3 + 1.265625 = -1.734375
1.265625 + -2.25x + x2 = -1.734375

Factor a perfect square on the left side:
(x + -1.125)(x + -1.125) = -1.734375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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