2x*5(x-3)=13

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Solution for 2x*5(x-3)=13 equation:


Simplifying
2x * 5(x + -3) = 13

Reorder the terms:
2x * 5(-3 + x) = 13

Reorder the terms for easier multiplication:
2 * 5x(-3 + x) = 13

Multiply 2 * 5
10x(-3 + x) = 13
(-3 * 10x + x * 10x) = 13
(-30x + 10x2) = 13

Solving
-30x + 10x2 = 13

Solving for variable 'x'.

Reorder the terms:
-13 + -30x + 10x2 = 13 + -13

Combine like terms: 13 + -13 = 0
-13 + -30x + 10x2 = 0

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

Divide each side by '10'.
-1.3 + -3x + x2 = 0.0

Move the constant term to the right:

Add '1.3' to each side of the equation.
-1.3 + -3x + 1.3 + x2 = 0.0 + 1.3

Reorder the terms:
-1.3 + 1.3 + -3x + x2 = 0.0 + 1.3

Combine like terms: -1.3 + 1.3 = 0.0
0.0 + -3x + x2 = 0.0 + 1.3
-3x + x2 = 0.0 + 1.3

Combine like terms: 0.0 + 1.3 = 1.3
-3x + x2 = 1.3

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 1.3 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 1.3 + 2.25

Combine like terms: 1.3 + 2.25 = 3.55
2.25 + -3x + x2 = 3.55

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 3.55

Calculate the square root of the right side: 1.884144368

Break this problem into two subproblems by setting 
(x + -1.5) equal to 1.884144368 and -1.884144368.

Subproblem 1

x + -1.5 = 1.884144368 Simplifying x + -1.5 = 1.884144368 Reorder the terms: -1.5 + x = 1.884144368 Solving -1.5 + x = 1.884144368 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 1.884144368 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 1.884144368 + 1.5 x = 1.884144368 + 1.5 Combine like terms: 1.884144368 + 1.5 = 3.384144368 x = 3.384144368 Simplifying x = 3.384144368

Subproblem 2

x + -1.5 = -1.884144368 Simplifying x + -1.5 = -1.884144368 Reorder the terms: -1.5 + x = -1.884144368 Solving -1.5 + x = -1.884144368 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -1.884144368 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -1.884144368 + 1.5 x = -1.884144368 + 1.5 Combine like terms: -1.884144368 + 1.5 = -0.384144368 x = -0.384144368 Simplifying x = -0.384144368

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.384144368, -0.384144368}

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