(2x-1)(x+6)=148

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Solution for (2x-1)(x+6)=148 equation:


Simplifying
(2x + -1)(x + 6) = 148

Reorder the terms:
(-1 + 2x)(x + 6) = 148

Reorder the terms:
(-1 + 2x)(6 + x) = 148

Multiply (-1 + 2x) * (6 + x)
(-1(6 + x) + 2x * (6 + x)) = 148
((6 * -1 + x * -1) + 2x * (6 + x)) = 148
((-6 + -1x) + 2x * (6 + x)) = 148
(-6 + -1x + (6 * 2x + x * 2x)) = 148
(-6 + -1x + (12x + 2x2)) = 148

Combine like terms: -1x + 12x = 11x
(-6 + 11x + 2x2) = 148

Solving
-6 + 11x + 2x2 = 148

Solving for variable 'x'.

Reorder the terms:
-6 + -148 + 11x + 2x2 = 148 + -148

Combine like terms: -6 + -148 = -154
-154 + 11x + 2x2 = 148 + -148

Combine like terms: 148 + -148 = 0
-154 + 11x + 2x2 = 0

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

Divide each side by '2'.
-77 + 5.5x + x2 = 0

Move the constant term to the right:

Add '77' to each side of the equation.
-77 + 5.5x + 77 + x2 = 0 + 77

Reorder the terms:
-77 + 77 + 5.5x + x2 = 0 + 77

Combine like terms: -77 + 77 = 0
0 + 5.5x + x2 = 0 + 77
5.5x + x2 = 0 + 77

Combine like terms: 0 + 77 = 77
5.5x + x2 = 77

The x term is 5.5x.  Take half its coefficient (2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
5.5x + 7.5625 + x2 = 77 + 7.5625

Reorder the terms:
7.5625 + 5.5x + x2 = 77 + 7.5625

Combine like terms: 77 + 7.5625 = 84.5625
7.5625 + 5.5x + x2 = 84.5625

Factor a perfect square on the left side:
(x + 2.75)(x + 2.75) = 84.5625

Calculate the square root of the right side: 9.195787079

Break this problem into two subproblems by setting 
(x + 2.75) equal to 9.195787079 and -9.195787079.

Subproblem 1

x + 2.75 = 9.195787079 Simplifying x + 2.75 = 9.195787079 Reorder the terms: 2.75 + x = 9.195787079 Solving 2.75 + x = 9.195787079 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + x = 9.195787079 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + x = 9.195787079 + -2.75 x = 9.195787079 + -2.75 Combine like terms: 9.195787079 + -2.75 = 6.445787079 x = 6.445787079 Simplifying x = 6.445787079

Subproblem 2

x + 2.75 = -9.195787079 Simplifying x + 2.75 = -9.195787079 Reorder the terms: 2.75 + x = -9.195787079 Solving 2.75 + x = -9.195787079 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.75' to each side of the equation. 2.75 + -2.75 + x = -9.195787079 + -2.75 Combine like terms: 2.75 + -2.75 = 0.00 0.00 + x = -9.195787079 + -2.75 x = -9.195787079 + -2.75 Combine like terms: -9.195787079 + -2.75 = -11.945787079 x = -11.945787079 Simplifying x = -11.945787079

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.445787079, -11.945787079}

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