9x^2-12x+16-4x^2+4x-1=0

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Solution for 9x^2-12x+16-4x^2+4x-1=0 equation:


Simplifying
9x2 + -12x + 16 + -4x2 + 4x + -1 = 0

Reorder the terms:
16 + -1 + -12x + 4x + 9x2 + -4x2 = 0

Combine like terms: 16 + -1 = 15
15 + -12x + 4x + 9x2 + -4x2 = 0

Combine like terms: -12x + 4x = -8x
15 + -8x + 9x2 + -4x2 = 0

Combine like terms: 9x2 + -4x2 = 5x2
15 + -8x + 5x2 = 0

Solving
15 + -8x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
3 + -1.6x + x2 = 0

Move the constant term to the right:

Add '-3' to each side of the equation.
3 + -1.6x + -3 + x2 = 0 + -3

Reorder the terms:
3 + -3 + -1.6x + x2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -1.6x + x2 = 0 + -3
-1.6x + x2 = 0 + -3

Combine like terms: 0 + -3 = -3
-1.6x + x2 = -3

The x term is -1.6x.  Take half its coefficient (-0.8).
Square it (0.64) and add it to both sides.

Add '0.64' to each side of the equation.
-1.6x + 0.64 + x2 = -3 + 0.64

Reorder the terms:
0.64 + -1.6x + x2 = -3 + 0.64

Combine like terms: -3 + 0.64 = -2.36
0.64 + -1.6x + x2 = -2.36

Factor a perfect square on the left side:
(x + -0.8)(x + -0.8) = -2.36

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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