5x(x-6)+4=2(x-7)

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Solution for 5x(x-6)+4=2(x-7) equation:


Simplifying
5x(x + -6) + 4 = 2(x + -7)

Reorder the terms:
5x(-6 + x) + 4 = 2(x + -7)
(-6 * 5x + x * 5x) + 4 = 2(x + -7)
(-30x + 5x2) + 4 = 2(x + -7)

Reorder the terms:
4 + -30x + 5x2 = 2(x + -7)

Reorder the terms:
4 + -30x + 5x2 = 2(-7 + x)
4 + -30x + 5x2 = (-7 * 2 + x * 2)
4 + -30x + 5x2 = (-14 + 2x)

Solving
4 + -30x + 5x2 = -14 + 2x

Solving for variable 'x'.

Reorder the terms:
4 + 14 + -30x + -2x + 5x2 = -14 + 2x + 14 + -2x

Combine like terms: 4 + 14 = 18
18 + -30x + -2x + 5x2 = -14 + 2x + 14 + -2x

Combine like terms: -30x + -2x = -32x
18 + -32x + 5x2 = -14 + 2x + 14 + -2x

Reorder the terms:
18 + -32x + 5x2 = -14 + 14 + 2x + -2x

Combine like terms: -14 + 14 = 0
18 + -32x + 5x2 = 0 + 2x + -2x
18 + -32x + 5x2 = 2x + -2x

Combine like terms: 2x + -2x = 0
18 + -32x + 5x2 = 0

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

Divide each side by '5'.
3.6 + -6.4x + x2 = 0

Move the constant term to the right:

Add '-3.6' to each side of the equation.
3.6 + -6.4x + -3.6 + x2 = 0 + -3.6

Reorder the terms:
3.6 + -3.6 + -6.4x + x2 = 0 + -3.6

Combine like terms: 3.6 + -3.6 = 0.0
0.0 + -6.4x + x2 = 0 + -3.6
-6.4x + x2 = 0 + -3.6

Combine like terms: 0 + -3.6 = -3.6
-6.4x + x2 = -3.6

The x term is -6.4x.  Take half its coefficient (-3.2).
Square it (10.24) and add it to both sides.

Add '10.24' to each side of the equation.
-6.4x + 10.24 + x2 = -3.6 + 10.24

Reorder the terms:
10.24 + -6.4x + x2 = -3.6 + 10.24

Combine like terms: -3.6 + 10.24 = 6.64
10.24 + -6.4x + x2 = 6.64

Factor a perfect square on the left side:
(x + -3.2)(x + -3.2) = 6.64

Calculate the square root of the right side: 2.576819745

Break this problem into two subproblems by setting 
(x + -3.2) equal to 2.576819745 and -2.576819745.

Subproblem 1

x + -3.2 = 2.576819745 Simplifying x + -3.2 = 2.576819745 Reorder the terms: -3.2 + x = 2.576819745 Solving -3.2 + x = 2.576819745 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.2' to each side of the equation. -3.2 + 3.2 + x = 2.576819745 + 3.2 Combine like terms: -3.2 + 3.2 = 0.0 0.0 + x = 2.576819745 + 3.2 x = 2.576819745 + 3.2 Combine like terms: 2.576819745 + 3.2 = 5.776819745 x = 5.776819745 Simplifying x = 5.776819745

Subproblem 2

x + -3.2 = -2.576819745 Simplifying x + -3.2 = -2.576819745 Reorder the terms: -3.2 + x = -2.576819745 Solving -3.2 + x = -2.576819745 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.2' to each side of the equation. -3.2 + 3.2 + x = -2.576819745 + 3.2 Combine like terms: -3.2 + 3.2 = 0.0 0.0 + x = -2.576819745 + 3.2 x = -2.576819745 + 3.2 Combine like terms: -2.576819745 + 3.2 = 0.623180255 x = 0.623180255 Simplifying x = 0.623180255

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.776819745, 0.623180255}

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