(4x-3)(2x-5)=16x

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Solution for (4x-3)(2x-5)=16x equation:


Simplifying
(4x + -3)(2x + -5) = 16x

Reorder the terms:
(-3 + 4x)(2x + -5) = 16x

Reorder the terms:
(-3 + 4x)(-5 + 2x) = 16x

Multiply (-3 + 4x) * (-5 + 2x)
(-3(-5 + 2x) + 4x * (-5 + 2x)) = 16x
((-5 * -3 + 2x * -3) + 4x * (-5 + 2x)) = 16x
((15 + -6x) + 4x * (-5 + 2x)) = 16x
(15 + -6x + (-5 * 4x + 2x * 4x)) = 16x
(15 + -6x + (-20x + 8x2)) = 16x

Combine like terms: -6x + -20x = -26x
(15 + -26x + 8x2) = 16x

Solving
15 + -26x + 8x2 = 16x

Solving for variable 'x'.

Reorder the terms:
15 + -26x + -16x + 8x2 = 16x + -16x

Combine like terms: -26x + -16x = -42x
15 + -42x + 8x2 = 16x + -16x

Combine like terms: 16x + -16x = 0
15 + -42x + 8x2 = 0

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

Divide each side by '8'.
1.875 + -5.25x + x2 = 0

Move the constant term to the right:

Add '-1.875' to each side of the equation.
1.875 + -5.25x + -1.875 + x2 = 0 + -1.875

Reorder the terms:
1.875 + -1.875 + -5.25x + x2 = 0 + -1.875

Combine like terms: 1.875 + -1.875 = 0.000
0.000 + -5.25x + x2 = 0 + -1.875
-5.25x + x2 = 0 + -1.875

Combine like terms: 0 + -1.875 = -1.875
-5.25x + x2 = -1.875

The x term is -5.25x.  Take half its coefficient (-2.625).
Square it (6.890625) and add it to both sides.

Add '6.890625' to each side of the equation.
-5.25x + 6.890625 + x2 = -1.875 + 6.890625

Reorder the terms:
6.890625 + -5.25x + x2 = -1.875 + 6.890625

Combine like terms: -1.875 + 6.890625 = 5.015625
6.890625 + -5.25x + x2 = 5.015625

Factor a perfect square on the left side:
(x + -2.625)(x + -2.625) = 5.015625

Calculate the square root of the right side: 2.239559108

Break this problem into two subproblems by setting 
(x + -2.625) equal to 2.239559108 and -2.239559108.

Subproblem 1

x + -2.625 = 2.239559108 Simplifying x + -2.625 = 2.239559108 Reorder the terms: -2.625 + x = 2.239559108 Solving -2.625 + x = 2.239559108 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.625' to each side of the equation. -2.625 + 2.625 + x = 2.239559108 + 2.625 Combine like terms: -2.625 + 2.625 = 0.000 0.000 + x = 2.239559108 + 2.625 x = 2.239559108 + 2.625 Combine like terms: 2.239559108 + 2.625 = 4.864559108 x = 4.864559108 Simplifying x = 4.864559108

Subproblem 2

x + -2.625 = -2.239559108 Simplifying x + -2.625 = -2.239559108 Reorder the terms: -2.625 + x = -2.239559108 Solving -2.625 + x = -2.239559108 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.625' to each side of the equation. -2.625 + 2.625 + x = -2.239559108 + 2.625 Combine like terms: -2.625 + 2.625 = 0.000 0.000 + x = -2.239559108 + 2.625 x = -2.239559108 + 2.625 Combine like terms: -2.239559108 + 2.625 = 0.385440892 x = 0.385440892 Simplifying x = 0.385440892

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.864559108, 0.385440892}

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