9x(3+7x)=2x-9

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Solution for 9x(3+7x)=2x-9 equation:


Simplifying
9x(3 + 7x) = 2x + -9
(3 * 9x + 7x * 9x) = 2x + -9
(27x + 63x2) = 2x + -9

Reorder the terms:
27x + 63x2 = -9 + 2x

Solving
27x + 63x2 = -9 + 2x

Solving for variable 'x'.

Reorder the terms:
9 + 27x + -2x + 63x2 = -9 + 2x + 9 + -2x

Combine like terms: 27x + -2x = 25x
9 + 25x + 63x2 = -9 + 2x + 9 + -2x

Reorder the terms:
9 + 25x + 63x2 = -9 + 9 + 2x + -2x

Combine like terms: -9 + 9 = 0
9 + 25x + 63x2 = 0 + 2x + -2x
9 + 25x + 63x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
9 + 25x + 63x2 = 0

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

Divide each side by '63'.
0.1428571429 + 0.3968253968x + x2 = 0

Move the constant term to the right:

Add '-0.1428571429' to each side of the equation.
0.1428571429 + 0.3968253968x + -0.1428571429 + x2 = 0 + -0.1428571429

Reorder the terms:
0.1428571429 + -0.1428571429 + 0.3968253968x + x2 = 0 + -0.1428571429

Combine like terms: 0.1428571429 + -0.1428571429 = 0.0000000000
0.0000000000 + 0.3968253968x + x2 = 0 + -0.1428571429
0.3968253968x + x2 = 0 + -0.1428571429

Combine like terms: 0 + -0.1428571429 = -0.1428571429
0.3968253968x + x2 = -0.1428571429

The x term is 0.3968253968x.  Take half its coefficient (0.1984126984).
Square it (0.03936759889) and add it to both sides.

Add '0.03936759889' to each side of the equation.
0.3968253968x + 0.03936759889 + x2 = -0.1428571429 + 0.03936759889

Reorder the terms:
0.03936759889 + 0.3968253968x + x2 = -0.1428571429 + 0.03936759889

Combine like terms: -0.1428571429 + 0.03936759889 = -0.10348954401
0.03936759889 + 0.3968253968x + x2 = -0.10348954401

Factor a perfect square on the left side:
(x + 0.1984126984)(x + 0.1984126984) = -0.10348954401

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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