(6x+7)(5x-4)=6(5x-1)

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Solution for (6x+7)(5x-4)=6(5x-1) equation:


Simplifying
(6x + 7)(5x + -4) = 6(5x + -1)

Reorder the terms:
(7 + 6x)(5x + -4) = 6(5x + -1)

Reorder the terms:
(7 + 6x)(-4 + 5x) = 6(5x + -1)

Multiply (7 + 6x) * (-4 + 5x)
(7(-4 + 5x) + 6x * (-4 + 5x)) = 6(5x + -1)
((-4 * 7 + 5x * 7) + 6x * (-4 + 5x)) = 6(5x + -1)
((-28 + 35x) + 6x * (-4 + 5x)) = 6(5x + -1)
(-28 + 35x + (-4 * 6x + 5x * 6x)) = 6(5x + -1)
(-28 + 35x + (-24x + 30x2)) = 6(5x + -1)

Combine like terms: 35x + -24x = 11x
(-28 + 11x + 30x2) = 6(5x + -1)

Reorder the terms:
-28 + 11x + 30x2 = 6(-1 + 5x)
-28 + 11x + 30x2 = (-1 * 6 + 5x * 6)
-28 + 11x + 30x2 = (-6 + 30x)

Solving
-28 + 11x + 30x2 = -6 + 30x

Solving for variable 'x'.

Reorder the terms:
-28 + 6 + 11x + -30x + 30x2 = -6 + 30x + 6 + -30x

Combine like terms: -28 + 6 = -22
-22 + 11x + -30x + 30x2 = -6 + 30x + 6 + -30x

Combine like terms: 11x + -30x = -19x
-22 + -19x + 30x2 = -6 + 30x + 6 + -30x

Reorder the terms:
-22 + -19x + 30x2 = -6 + 6 + 30x + -30x

Combine like terms: -6 + 6 = 0
-22 + -19x + 30x2 = 0 + 30x + -30x
-22 + -19x + 30x2 = 30x + -30x

Combine like terms: 30x + -30x = 0
-22 + -19x + 30x2 = 0

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

Divide each side by '30'.
-0.7333333333 + -0.6333333333x + x2 = 0

Move the constant term to the right:

Add '0.7333333333' to each side of the equation.
-0.7333333333 + -0.6333333333x + 0.7333333333 + x2 = 0 + 0.7333333333

Reorder the terms:
-0.7333333333 + 0.7333333333 + -0.6333333333x + x2 = 0 + 0.7333333333

Combine like terms: -0.7333333333 + 0.7333333333 = 0.0000000000
0.0000000000 + -0.6333333333x + x2 = 0 + 0.7333333333
-0.6333333333x + x2 = 0 + 0.7333333333

Combine like terms: 0 + 0.7333333333 = 0.7333333333
-0.6333333333x + x2 = 0.7333333333

The x term is -0.6333333333x.  Take half its coefficient (-0.3166666667).
Square it (0.1002777778) and add it to both sides.

Add '0.1002777778' to each side of the equation.
-0.6333333333x + 0.1002777778 + x2 = 0.7333333333 + 0.1002777778

Reorder the terms:
0.1002777778 + -0.6333333333x + x2 = 0.7333333333 + 0.1002777778

Combine like terms: 0.7333333333 + 0.1002777778 = 0.8336111111
0.1002777778 + -0.6333333333x + x2 = 0.8336111111

Factor a perfect square on the left side:
(x + -0.3166666667)(x + -0.3166666667) = 0.8336111111

Calculate the square root of the right side: 0.913023062

Break this problem into two subproblems by setting 
(x + -0.3166666667) equal to 0.913023062 and -0.913023062.

Subproblem 1

x + -0.3166666667 = 0.913023062 Simplifying x + -0.3166666667 = 0.913023062 Reorder the terms: -0.3166666667 + x = 0.913023062 Solving -0.3166666667 + x = 0.913023062 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3166666667' to each side of the equation. -0.3166666667 + 0.3166666667 + x = 0.913023062 + 0.3166666667 Combine like terms: -0.3166666667 + 0.3166666667 = 0.0000000000 0.0000000000 + x = 0.913023062 + 0.3166666667 x = 0.913023062 + 0.3166666667 Combine like terms: 0.913023062 + 0.3166666667 = 1.2296897287 x = 1.2296897287 Simplifying x = 1.2296897287

Subproblem 2

x + -0.3166666667 = -0.913023062 Simplifying x + -0.3166666667 = -0.913023062 Reorder the terms: -0.3166666667 + x = -0.913023062 Solving -0.3166666667 + x = -0.913023062 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3166666667' to each side of the equation. -0.3166666667 + 0.3166666667 + x = -0.913023062 + 0.3166666667 Combine like terms: -0.3166666667 + 0.3166666667 = 0.0000000000 0.0000000000 + x = -0.913023062 + 0.3166666667 x = -0.913023062 + 0.3166666667 Combine like terms: -0.913023062 + 0.3166666667 = -0.5963563953 x = -0.5963563953 Simplifying x = -0.5963563953

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.2296897287, -0.5963563953}

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