(9x^2+16x-1)-3(x^2+8x-2)=

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Solution for (9x^2+16x-1)-3(x^2+8x-2)= equation:


Simplifying
(9x2 + 16x + -1) + -3(x2 + 8x + -2) = 0

Reorder the terms:
(-1 + 16x + 9x2) + -3(x2 + 8x + -2) = 0

Remove parenthesis around (-1 + 16x + 9x2)
-1 + 16x + 9x2 + -3(x2 + 8x + -2) = 0

Reorder the terms:
-1 + 16x + 9x2 + -3(-2 + 8x + x2) = 0
-1 + 16x + 9x2 + (-2 * -3 + 8x * -3 + x2 * -3) = 0
-1 + 16x + 9x2 + (6 + -24x + -3x2) = 0

Reorder the terms:
-1 + 6 + 16x + -24x + 9x2 + -3x2 = 0

Combine like terms: -1 + 6 = 5
5 + 16x + -24x + 9x2 + -3x2 = 0

Combine like terms: 16x + -24x = -8x
5 + -8x + 9x2 + -3x2 = 0

Combine like terms: 9x2 + -3x2 = 6x2
5 + -8x + 6x2 = 0

Solving
5 + -8x + 6x2 = 0

Solving for variable 'x'.

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

Divide each side by '6'.
0.8333333333 + -1.333333333x + x2 = 0

Move the constant term to the right:

Add '-0.8333333333' to each side of the equation.
0.8333333333 + -1.333333333x + -0.8333333333 + x2 = 0 + -0.8333333333

Reorder the terms:
0.8333333333 + -0.8333333333 + -1.333333333x + x2 = 0 + -0.8333333333

Combine like terms: 0.8333333333 + -0.8333333333 = 0.0000000000
0.0000000000 + -1.333333333x + x2 = 0 + -0.8333333333
-1.333333333x + x2 = 0 + -0.8333333333

Combine like terms: 0 + -0.8333333333 = -0.8333333333
-1.333333333x + x2 = -0.8333333333

The x term is -1.333333333x.  Take half its coefficient (-0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
-1.333333333x + 0.4444444442 + x2 = -0.8333333333 + 0.4444444442

Reorder the terms:
0.4444444442 + -1.333333333x + x2 = -0.8333333333 + 0.4444444442

Combine like terms: -0.8333333333 + 0.4444444442 = -0.3888888891
0.4444444442 + -1.333333333x + x2 = -0.3888888891

Factor a perfect square on the left side:
(x + -0.6666666665)(x + -0.6666666665) = -0.3888888891

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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