-4x(2x-3)=-5x+5

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Solution for -4x(2x-3)=-5x+5 equation:


Simplifying
-4x(2x + -3) = -5x + 5

Reorder the terms:
-4x(-3 + 2x) = -5x + 5
(-3 * -4x + 2x * -4x) = -5x + 5
(12x + -8x2) = -5x + 5

Reorder the terms:
12x + -8x2 = 5 + -5x

Solving
12x + -8x2 = 5 + -5x

Solving for variable 'x'.

Reorder the terms:
-5 + 12x + 5x + -8x2 = 5 + -5x + -5 + 5x

Combine like terms: 12x + 5x = 17x
-5 + 17x + -8x2 = 5 + -5x + -5 + 5x

Reorder the terms:
-5 + 17x + -8x2 = 5 + -5 + -5x + 5x

Combine like terms: 5 + -5 = 0
-5 + 17x + -8x2 = 0 + -5x + 5x
-5 + 17x + -8x2 = -5x + 5x

Combine like terms: -5x + 5x = 0
-5 + 17x + -8x2 = 0

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
0.625 + -2.125x + x2 = 0

Move the constant term to the right:

Add '-0.625' to each side of the equation.
0.625 + -2.125x + -0.625 + x2 = 0 + -0.625

Reorder the terms:
0.625 + -0.625 + -2.125x + x2 = 0 + -0.625

Combine like terms: 0.625 + -0.625 = 0.000
0.000 + -2.125x + x2 = 0 + -0.625
-2.125x + x2 = 0 + -0.625

Combine like terms: 0 + -0.625 = -0.625
-2.125x + x2 = -0.625

The x term is -2.125x.  Take half its coefficient (-1.0625).
Square it (1.12890625) and add it to both sides.

Add '1.12890625' to each side of the equation.
-2.125x + 1.12890625 + x2 = -0.625 + 1.12890625

Reorder the terms:
1.12890625 + -2.125x + x2 = -0.625 + 1.12890625

Combine like terms: -0.625 + 1.12890625 = 0.50390625
1.12890625 + -2.125x + x2 = 0.50390625

Factor a perfect square on the left side:
(x + -1.0625)(x + -1.0625) = 0.50390625

Calculate the square root of the right side: 0.709863543

Break this problem into two subproblems by setting 
(x + -1.0625) equal to 0.709863543 and -0.709863543.

Subproblem 1

x + -1.0625 = 0.709863543 Simplifying x + -1.0625 = 0.709863543 Reorder the terms: -1.0625 + x = 0.709863543 Solving -1.0625 + x = 0.709863543 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.0625' to each side of the equation. -1.0625 + 1.0625 + x = 0.709863543 + 1.0625 Combine like terms: -1.0625 + 1.0625 = 0.0000 0.0000 + x = 0.709863543 + 1.0625 x = 0.709863543 + 1.0625 Combine like terms: 0.709863543 + 1.0625 = 1.772363543 x = 1.772363543 Simplifying x = 1.772363543

Subproblem 2

x + -1.0625 = -0.709863543 Simplifying x + -1.0625 = -0.709863543 Reorder the terms: -1.0625 + x = -0.709863543 Solving -1.0625 + x = -0.709863543 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.0625' to each side of the equation. -1.0625 + 1.0625 + x = -0.709863543 + 1.0625 Combine like terms: -1.0625 + 1.0625 = 0.0000 0.0000 + x = -0.709863543 + 1.0625 x = -0.709863543 + 1.0625 Combine like terms: -0.709863543 + 1.0625 = 0.352636457 x = 0.352636457 Simplifying x = 0.352636457

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.772363543, 0.352636457}

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