(x-7)(2x-11)=150

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Solution for (x-7)(2x-11)=150 equation:


Simplifying
(x + -7)(2x + -11) = 150

Reorder the terms:
(-7 + x)(2x + -11) = 150

Reorder the terms:
(-7 + x)(-11 + 2x) = 150

Multiply (-7 + x) * (-11 + 2x)
(-7(-11 + 2x) + x(-11 + 2x)) = 150
((-11 * -7 + 2x * -7) + x(-11 + 2x)) = 150
((77 + -14x) + x(-11 + 2x)) = 150
(77 + -14x + (-11 * x + 2x * x)) = 150
(77 + -14x + (-11x + 2x2)) = 150

Combine like terms: -14x + -11x = -25x
(77 + -25x + 2x2) = 150

Solving
77 + -25x + 2x2 = 150

Solving for variable 'x'.

Reorder the terms:
77 + -150 + -25x + 2x2 = 150 + -150

Combine like terms: 77 + -150 = -73
-73 + -25x + 2x2 = 150 + -150

Combine like terms: 150 + -150 = 0
-73 + -25x + 2x2 = 0

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

Divide each side by '2'.
-36.5 + -12.5x + x2 = 0

Move the constant term to the right:

Add '36.5' to each side of the equation.
-36.5 + -12.5x + 36.5 + x2 = 0 + 36.5

Reorder the terms:
-36.5 + 36.5 + -12.5x + x2 = 0 + 36.5

Combine like terms: -36.5 + 36.5 = 0.0
0.0 + -12.5x + x2 = 0 + 36.5
-12.5x + x2 = 0 + 36.5

Combine like terms: 0 + 36.5 = 36.5
-12.5x + x2 = 36.5

The x term is -12.5x.  Take half its coefficient (-6.25).
Square it (39.0625) and add it to both sides.

Add '39.0625' to each side of the equation.
-12.5x + 39.0625 + x2 = 36.5 + 39.0625

Reorder the terms:
39.0625 + -12.5x + x2 = 36.5 + 39.0625

Combine like terms: 36.5 + 39.0625 = 75.5625
39.0625 + -12.5x + x2 = 75.5625

Factor a perfect square on the left side:
(x + -6.25)(x + -6.25) = 75.5625

Calculate the square root of the right side: 8.692669325

Break this problem into two subproblems by setting 
(x + -6.25) equal to 8.692669325 and -8.692669325.

Subproblem 1

x + -6.25 = 8.692669325 Simplifying x + -6.25 = 8.692669325 Reorder the terms: -6.25 + x = 8.692669325 Solving -6.25 + x = 8.692669325 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.25' to each side of the equation. -6.25 + 6.25 + x = 8.692669325 + 6.25 Combine like terms: -6.25 + 6.25 = 0.00 0.00 + x = 8.692669325 + 6.25 x = 8.692669325 + 6.25 Combine like terms: 8.692669325 + 6.25 = 14.942669325 x = 14.942669325 Simplifying x = 14.942669325

Subproblem 2

x + -6.25 = -8.692669325 Simplifying x + -6.25 = -8.692669325 Reorder the terms: -6.25 + x = -8.692669325 Solving -6.25 + x = -8.692669325 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6.25' to each side of the equation. -6.25 + 6.25 + x = -8.692669325 + 6.25 Combine like terms: -6.25 + 6.25 = 0.00 0.00 + x = -8.692669325 + 6.25 x = -8.692669325 + 6.25 Combine like terms: -8.692669325 + 6.25 = -2.442669325 x = -2.442669325 Simplifying x = -2.442669325

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.942669325, -2.442669325}

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