(2x-1)*(5x+72)=250

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Solution for (2x-1)*(5x+72)=250 equation:


Simplifying
(2x + -1)(5x + 72) = 250

Reorder the terms:
(-1 + 2x)(5x + 72) = 250

Reorder the terms:
(-1 + 2x)(72 + 5x) = 250

Multiply (-1 + 2x) * (72 + 5x)
(-1(72 + 5x) + 2x * (72 + 5x)) = 250
((72 * -1 + 5x * -1) + 2x * (72 + 5x)) = 250
((-72 + -5x) + 2x * (72 + 5x)) = 250
(-72 + -5x + (72 * 2x + 5x * 2x)) = 250
(-72 + -5x + (144x + 10x2)) = 250

Combine like terms: -5x + 144x = 139x
(-72 + 139x + 10x2) = 250

Solving
-72 + 139x + 10x2 = 250

Solving for variable 'x'.

Reorder the terms:
-72 + -250 + 139x + 10x2 = 250 + -250

Combine like terms: -72 + -250 = -322
-322 + 139x + 10x2 = 250 + -250

Combine like terms: 250 + -250 = 0
-322 + 139x + 10x2 = 0

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

Divide each side by '10'.
-32.2 + 13.9x + x2 = 0.0

Move the constant term to the right:

Add '32.2' to each side of the equation.
-32.2 + 13.9x + 32.2 + x2 = 0.0 + 32.2

Reorder the terms:
-32.2 + 32.2 + 13.9x + x2 = 0.0 + 32.2

Combine like terms: -32.2 + 32.2 = 0.0
0.0 + 13.9x + x2 = 0.0 + 32.2
13.9x + x2 = 0.0 + 32.2

Combine like terms: 0.0 + 32.2 = 32.2
13.9x + x2 = 32.2

The x term is 13.9x.  Take half its coefficient (6.95).
Square it (48.3025) and add it to both sides.

Add '48.3025' to each side of the equation.
13.9x + 48.3025 + x2 = 32.2 + 48.3025

Reorder the terms:
48.3025 + 13.9x + x2 = 32.2 + 48.3025

Combine like terms: 32.2 + 48.3025 = 80.5025
48.3025 + 13.9x + x2 = 80.5025

Factor a perfect square on the left side:
(x + 6.95)(x + 6.95) = 80.5025

Calculate the square root of the right side: 8.972318541

Break this problem into two subproblems by setting 
(x + 6.95) equal to 8.972318541 and -8.972318541.

Subproblem 1

x + 6.95 = 8.972318541 Simplifying x + 6.95 = 8.972318541 Reorder the terms: 6.95 + x = 8.972318541 Solving 6.95 + x = 8.972318541 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6.95' to each side of the equation. 6.95 + -6.95 + x = 8.972318541 + -6.95 Combine like terms: 6.95 + -6.95 = 0.00 0.00 + x = 8.972318541 + -6.95 x = 8.972318541 + -6.95 Combine like terms: 8.972318541 + -6.95 = 2.022318541 x = 2.022318541 Simplifying x = 2.022318541

Subproblem 2

x + 6.95 = -8.972318541 Simplifying x + 6.95 = -8.972318541 Reorder the terms: 6.95 + x = -8.972318541 Solving 6.95 + x = -8.972318541 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6.95' to each side of the equation. 6.95 + -6.95 + x = -8.972318541 + -6.95 Combine like terms: 6.95 + -6.95 = 0.00 0.00 + x = -8.972318541 + -6.95 x = -8.972318541 + -6.95 Combine like terms: -8.972318541 + -6.95 = -15.922318541 x = -15.922318541 Simplifying x = -15.922318541

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.022318541, -15.922318541}

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