4x(x-5)=-25+6x

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Solution for 4x(x-5)=-25+6x equation:


Simplifying
4x(x + -5) = -25 + 6x

Reorder the terms:
4x(-5 + x) = -25 + 6x
(-5 * 4x + x * 4x) = -25 + 6x
(-20x + 4x2) = -25 + 6x

Solving
-20x + 4x2 = -25 + 6x

Solving for variable 'x'.

Reorder the terms:
25 + -20x + -6x + 4x2 = -25 + 6x + 25 + -6x

Combine like terms: -20x + -6x = -26x
25 + -26x + 4x2 = -25 + 6x + 25 + -6x

Reorder the terms:
25 + -26x + 4x2 = -25 + 25 + 6x + -6x

Combine like terms: -25 + 25 = 0
25 + -26x + 4x2 = 0 + 6x + -6x
25 + -26x + 4x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
25 + -26x + 4x2 = 0

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

Divide each side by '4'.
6.25 + -6.5x + x2 = 0

Move the constant term to the right:

Add '-6.25' to each side of the equation.
6.25 + -6.5x + -6.25 + x2 = 0 + -6.25

Reorder the terms:
6.25 + -6.25 + -6.5x + x2 = 0 + -6.25

Combine like terms: 6.25 + -6.25 = 0.00
0.00 + -6.5x + x2 = 0 + -6.25
-6.5x + x2 = 0 + -6.25

Combine like terms: 0 + -6.25 = -6.25
-6.5x + x2 = -6.25

The x term is -6.5x.  Take half its coefficient (-3.25).
Square it (10.5625) and add it to both sides.

Add '10.5625' to each side of the equation.
-6.5x + 10.5625 + x2 = -6.25 + 10.5625

Reorder the terms:
10.5625 + -6.5x + x2 = -6.25 + 10.5625

Combine like terms: -6.25 + 10.5625 = 4.3125
10.5625 + -6.5x + x2 = 4.3125

Factor a perfect square on the left side:
(x + -3.25)(x + -3.25) = 4.3125

Calculate the square root of the right side: 2.076655966

Break this problem into two subproblems by setting 
(x + -3.25) equal to 2.076655966 and -2.076655966.

Subproblem 1

x + -3.25 = 2.076655966 Simplifying x + -3.25 = 2.076655966 Reorder the terms: -3.25 + x = 2.076655966 Solving -3.25 + x = 2.076655966 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.25' to each side of the equation. -3.25 + 3.25 + x = 2.076655966 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + x = 2.076655966 + 3.25 x = 2.076655966 + 3.25 Combine like terms: 2.076655966 + 3.25 = 5.326655966 x = 5.326655966 Simplifying x = 5.326655966

Subproblem 2

x + -3.25 = -2.076655966 Simplifying x + -3.25 = -2.076655966 Reorder the terms: -3.25 + x = -2.076655966 Solving -3.25 + x = -2.076655966 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.25' to each side of the equation. -3.25 + 3.25 + x = -2.076655966 + 3.25 Combine like terms: -3.25 + 3.25 = 0.00 0.00 + x = -2.076655966 + 3.25 x = -2.076655966 + 3.25 Combine like terms: -2.076655966 + 3.25 = 1.173344034 x = 1.173344034 Simplifying x = 1.173344034

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.326655966, 1.173344034}

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