-7+10x(x-5)-3x=4x-3(18-x)

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Solution for -7+10x(x-5)-3x=4x-3(18-x) equation:


Simplifying
-7 + 10x(x + -5) + -3x = 4x + -3(18 + -1x)

Reorder the terms:
-7 + 10x(-5 + x) + -3x = 4x + -3(18 + -1x)
-7 + (-5 * 10x + x * 10x) + -3x = 4x + -3(18 + -1x)
-7 + (-50x + 10x2) + -3x = 4x + -3(18 + -1x)

Reorder the terms:
-7 + -50x + -3x + 10x2 = 4x + -3(18 + -1x)

Combine like terms: -50x + -3x = -53x
-7 + -53x + 10x2 = 4x + -3(18 + -1x)
-7 + -53x + 10x2 = 4x + (18 * -3 + -1x * -3)
-7 + -53x + 10x2 = 4x + (-54 + 3x)

Reorder the terms:
-7 + -53x + 10x2 = -54 + 4x + 3x

Combine like terms: 4x + 3x = 7x
-7 + -53x + 10x2 = -54 + 7x

Solving
-7 + -53x + 10x2 = -54 + 7x

Solving for variable 'x'.

Reorder the terms:
-7 + 54 + -53x + -7x + 10x2 = -54 + 7x + 54 + -7x

Combine like terms: -7 + 54 = 47
47 + -53x + -7x + 10x2 = -54 + 7x + 54 + -7x

Combine like terms: -53x + -7x = -60x
47 + -60x + 10x2 = -54 + 7x + 54 + -7x

Reorder the terms:
47 + -60x + 10x2 = -54 + 54 + 7x + -7x

Combine like terms: -54 + 54 = 0
47 + -60x + 10x2 = 0 + 7x + -7x
47 + -60x + 10x2 = 7x + -7x

Combine like terms: 7x + -7x = 0
47 + -60x + 10x2 = 0

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

Divide each side by '10'.
4.7 + -6x + x2 = 0

Move the constant term to the right:

Add '-4.7' to each side of the equation.
4.7 + -6x + -4.7 + x2 = 0 + -4.7

Reorder the terms:
4.7 + -4.7 + -6x + x2 = 0 + -4.7

Combine like terms: 4.7 + -4.7 = 0.0
0.0 + -6x + x2 = 0 + -4.7
-6x + x2 = 0 + -4.7

Combine like terms: 0 + -4.7 = -4.7
-6x + x2 = -4.7

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = -4.7 + 9

Reorder the terms:
9 + -6x + x2 = -4.7 + 9

Combine like terms: -4.7 + 9 = 4.3
9 + -6x + x2 = 4.3

Factor a perfect square on the left side:
(x + -3)(x + -3) = 4.3

Calculate the square root of the right side: 2.073644135

Break this problem into two subproblems by setting 
(x + -3) equal to 2.073644135 and -2.073644135.

Subproblem 1

x + -3 = 2.073644135 Simplifying x + -3 = 2.073644135 Reorder the terms: -3 + x = 2.073644135 Solving -3 + x = 2.073644135 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = 2.073644135 + 3 Combine like terms: -3 + 3 = 0 0 + x = 2.073644135 + 3 x = 2.073644135 + 3 Combine like terms: 2.073644135 + 3 = 5.073644135 x = 5.073644135 Simplifying x = 5.073644135

Subproblem 2

x + -3 = -2.073644135 Simplifying x + -3 = -2.073644135 Reorder the terms: -3 + x = -2.073644135 Solving -3 + x = -2.073644135 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + x = -2.073644135 + 3 Combine like terms: -3 + 3 = 0 0 + x = -2.073644135 + 3 x = -2.073644135 + 3 Combine like terms: -2.073644135 + 3 = 0.926355865 x = 0.926355865 Simplifying x = 0.926355865

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.073644135, 0.926355865}

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