(3x-50)(2x-5)=180

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Solution for (3x-50)(2x-5)=180 equation:


Simplifying
(3x + -50)(2x + -5) = 180

Reorder the terms:
(-50 + 3x)(2x + -5) = 180

Reorder the terms:
(-50 + 3x)(-5 + 2x) = 180

Multiply (-50 + 3x) * (-5 + 2x)
(-50(-5 + 2x) + 3x * (-5 + 2x)) = 180
((-5 * -50 + 2x * -50) + 3x * (-5 + 2x)) = 180
((250 + -100x) + 3x * (-5 + 2x)) = 180
(250 + -100x + (-5 * 3x + 2x * 3x)) = 180
(250 + -100x + (-15x + 6x2)) = 180

Combine like terms: -100x + -15x = -115x
(250 + -115x + 6x2) = 180

Solving
250 + -115x + 6x2 = 180

Solving for variable 'x'.

Reorder the terms:
250 + -180 + -115x + 6x2 = 180 + -180

Combine like terms: 250 + -180 = 70
70 + -115x + 6x2 = 180 + -180

Combine like terms: 180 + -180 = 0
70 + -115x + 6x2 = 0

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

Divide each side by '6'.
11.66666667 + -19.16666667x + x2 = 0

Move the constant term to the right:

Add '-11.66666667' to each side of the equation.
11.66666667 + -19.16666667x + -11.66666667 + x2 = 0 + -11.66666667

Reorder the terms:
11.66666667 + -11.66666667 + -19.16666667x + x2 = 0 + -11.66666667

Combine like terms: 11.66666667 + -11.66666667 = 0.00000000
0.00000000 + -19.16666667x + x2 = 0 + -11.66666667
-19.16666667x + x2 = 0 + -11.66666667

Combine like terms: 0 + -11.66666667 = -11.66666667
-19.16666667x + x2 = -11.66666667

The x term is -19.16666667x.  Take half its coefficient (-9.583333335).
Square it (91.84027781) and add it to both sides.

Add '91.84027781' to each side of the equation.
-19.16666667x + 91.84027781 + x2 = -11.66666667 + 91.84027781

Reorder the terms:
91.84027781 + -19.16666667x + x2 = -11.66666667 + 91.84027781

Combine like terms: -11.66666667 + 91.84027781 = 80.17361114
91.84027781 + -19.16666667x + x2 = 80.17361114

Factor a perfect square on the left side:
(x + -9.583333335)(x + -9.583333335) = 80.17361114

Calculate the square root of the right side: 8.953971808

Break this problem into two subproblems by setting 
(x + -9.583333335) equal to 8.953971808 and -8.953971808.

Subproblem 1

x + -9.583333335 = 8.953971808 Simplifying x + -9.583333335 = 8.953971808 Reorder the terms: -9.583333335 + x = 8.953971808 Solving -9.583333335 + x = 8.953971808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.583333335' to each side of the equation. -9.583333335 + 9.583333335 + x = 8.953971808 + 9.583333335 Combine like terms: -9.583333335 + 9.583333335 = 0.000000000 0.000000000 + x = 8.953971808 + 9.583333335 x = 8.953971808 + 9.583333335 Combine like terms: 8.953971808 + 9.583333335 = 18.537305143 x = 18.537305143 Simplifying x = 18.537305143

Subproblem 2

x + -9.583333335 = -8.953971808 Simplifying x + -9.583333335 = -8.953971808 Reorder the terms: -9.583333335 + x = -8.953971808 Solving -9.583333335 + x = -8.953971808 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9.583333335' to each side of the equation. -9.583333335 + 9.583333335 + x = -8.953971808 + 9.583333335 Combine like terms: -9.583333335 + 9.583333335 = 0.000000000 0.000000000 + x = -8.953971808 + 9.583333335 x = -8.953971808 + 9.583333335 Combine like terms: -8.953971808 + 9.583333335 = 0.629361527 x = 0.629361527 Simplifying x = 0.629361527

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.537305143, 0.629361527}

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