4x(x-5)=3x+5(x-5)

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Solution for 4x(x-5)=3x+5(x-5) equation:


Simplifying
4x(x + -5) = 3x + 5(x + -5)

Reorder the terms:
4x(-5 + x) = 3x + 5(x + -5)
(-5 * 4x + x * 4x) = 3x + 5(x + -5)
(-20x + 4x2) = 3x + 5(x + -5)

Reorder the terms:
-20x + 4x2 = 3x + 5(-5 + x)
-20x + 4x2 = 3x + (-5 * 5 + x * 5)
-20x + 4x2 = 3x + (-25 + 5x)

Reorder the terms:
-20x + 4x2 = -25 + 3x + 5x

Combine like terms: 3x + 5x = 8x
-20x + 4x2 = -25 + 8x

Solving
-20x + 4x2 = -25 + 8x

Solving for variable 'x'.

Reorder the terms:
25 + -20x + -8x + 4x2 = -25 + 8x + 25 + -8x

Combine like terms: -20x + -8x = -28x
25 + -28x + 4x2 = -25 + 8x + 25 + -8x

Reorder the terms:
25 + -28x + 4x2 = -25 + 25 + 8x + -8x

Combine like terms: -25 + 25 = 0
25 + -28x + 4x2 = 0 + 8x + -8x
25 + -28x + 4x2 = 8x + -8x

Combine like terms: 8x + -8x = 0
25 + -28x + 4x2 = 0

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

Divide each side by '4'.
6.25 + -7x + x2 = 0

Move the constant term to the right:

Add '-6.25' to each side of the equation.
6.25 + -7x + -6.25 + x2 = 0 + -6.25

Reorder the terms:
6.25 + -6.25 + -7x + x2 = 0 + -6.25

Combine like terms: 6.25 + -6.25 = 0.00
0.00 + -7x + x2 = 0 + -6.25
-7x + x2 = 0 + -6.25

Combine like terms: 0 + -6.25 = -6.25
-7x + x2 = -6.25

The x term is -7x.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7x + 12.25 + x2 = -6.25 + 12.25

Reorder the terms:
12.25 + -7x + x2 = -6.25 + 12.25

Combine like terms: -6.25 + 12.25 = 6
12.25 + -7x + x2 = 6

Factor a perfect square on the left side:
(x + -3.5)(x + -3.5) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(x + -3.5) equal to 2.449489743 and -2.449489743.

Subproblem 1

x + -3.5 = 2.449489743 Simplifying x + -3.5 = 2.449489743 Reorder the terms: -3.5 + x = 2.449489743 Solving -3.5 + x = 2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = 2.449489743 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = 2.449489743 + 3.5 x = 2.449489743 + 3.5 Combine like terms: 2.449489743 + 3.5 = 5.949489743 x = 5.949489743 Simplifying x = 5.949489743

Subproblem 2

x + -3.5 = -2.449489743 Simplifying x + -3.5 = -2.449489743 Reorder the terms: -3.5 + x = -2.449489743 Solving -3.5 + x = -2.449489743 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + x = -2.449489743 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + x = -2.449489743 + 3.5 x = -2.449489743 + 3.5 Combine like terms: -2.449489743 + 3.5 = 1.050510257 x = 1.050510257 Simplifying x = 1.050510257

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.949489743, 1.050510257}

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