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

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


Simplifying
4x(5 + -2x) + -3(2 + -1x) = 0
(5 * 4x + -2x * 4x) + -3(2 + -1x) = 0
(20x + -8x2) + -3(2 + -1x) = 0
20x + -8x2 + (2 * -3 + -1x * -3) = 0
20x + -8x2 + (-6 + 3x) = 0

Reorder the terms:
-6 + 20x + 3x + -8x2 = 0

Combine like terms: 20x + 3x = 23x
-6 + 23x + -8x2 = 0

Solving
-6 + 23x + -8x2 = 0

Solving for variable 'x'.

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

Divide each side by '-8'.
0.75 + -2.875x + x2 = 0

Move the constant term to the right:

Add '-0.75' to each side of the equation.
0.75 + -2.875x + -0.75 + x2 = 0 + -0.75

Reorder the terms:
0.75 + -0.75 + -2.875x + x2 = 0 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.00 + -2.875x + x2 = 0 + -0.75
-2.875x + x2 = 0 + -0.75

Combine like terms: 0 + -0.75 = -0.75
-2.875x + x2 = -0.75

The x term is -2.875x.  Take half its coefficient (-1.4375).
Square it (2.06640625) and add it to both sides.

Add '2.06640625' to each side of the equation.
-2.875x + 2.06640625 + x2 = -0.75 + 2.06640625

Reorder the terms:
2.06640625 + -2.875x + x2 = -0.75 + 2.06640625

Combine like terms: -0.75 + 2.06640625 = 1.31640625
2.06640625 + -2.875x + x2 = 1.31640625

Factor a perfect square on the left side:
(x + -1.4375)(x + -1.4375) = 1.31640625

Calculate the square root of the right side: 1.147347484

Break this problem into two subproblems by setting 
(x + -1.4375) equal to 1.147347484 and -1.147347484.

Subproblem 1

x + -1.4375 = 1.147347484 Simplifying x + -1.4375 = 1.147347484 Reorder the terms: -1.4375 + x = 1.147347484 Solving -1.4375 + x = 1.147347484 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.4375' to each side of the equation. -1.4375 + 1.4375 + x = 1.147347484 + 1.4375 Combine like terms: -1.4375 + 1.4375 = 0.0000 0.0000 + x = 1.147347484 + 1.4375 x = 1.147347484 + 1.4375 Combine like terms: 1.147347484 + 1.4375 = 2.584847484 x = 2.584847484 Simplifying x = 2.584847484

Subproblem 2

x + -1.4375 = -1.147347484 Simplifying x + -1.4375 = -1.147347484 Reorder the terms: -1.4375 + x = -1.147347484 Solving -1.4375 + x = -1.147347484 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.4375' to each side of the equation. -1.4375 + 1.4375 + x = -1.147347484 + 1.4375 Combine like terms: -1.4375 + 1.4375 = 0.0000 0.0000 + x = -1.147347484 + 1.4375 x = -1.147347484 + 1.4375 Combine like terms: -1.147347484 + 1.4375 = 0.290152516 x = 0.290152516 Simplifying x = 0.290152516

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.584847484, 0.290152516}

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