(6x-19)(3x+10)=180

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Solution for (6x-19)(3x+10)=180 equation:


Simplifying
(6x + -19)(3x + 10) = 180

Reorder the terms:
(-19 + 6x)(3x + 10) = 180

Reorder the terms:
(-19 + 6x)(10 + 3x) = 180

Multiply (-19 + 6x) * (10 + 3x)
(-19(10 + 3x) + 6x * (10 + 3x)) = 180
((10 * -19 + 3x * -19) + 6x * (10 + 3x)) = 180
((-190 + -57x) + 6x * (10 + 3x)) = 180
(-190 + -57x + (10 * 6x + 3x * 6x)) = 180
(-190 + -57x + (60x + 18x2)) = 180

Combine like terms: -57x + 60x = 3x
(-190 + 3x + 18x2) = 180

Solving
-190 + 3x + 18x2 = 180

Solving for variable 'x'.

Reorder the terms:
-190 + -180 + 3x + 18x2 = 180 + -180

Combine like terms: -190 + -180 = -370
-370 + 3x + 18x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-370 + 3x + 18x2 = 0

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

Divide each side by '18'.
-20.55555556 + 0.1666666667x + x2 = 0

Move the constant term to the right:

Add '20.55555556' to each side of the equation.
-20.55555556 + 0.1666666667x + 20.55555556 + x2 = 0 + 20.55555556

Reorder the terms:
-20.55555556 + 20.55555556 + 0.1666666667x + x2 = 0 + 20.55555556

Combine like terms: -20.55555556 + 20.55555556 = 0.00000000
0.00000000 + 0.1666666667x + x2 = 0 + 20.55555556
0.1666666667x + x2 = 0 + 20.55555556

Combine like terms: 0 + 20.55555556 = 20.55555556
0.1666666667x + x2 = 20.55555556

The x term is 0.1666666667x.  Take half its coefficient (0.08333333335).
Square it (0.006944444447) and add it to both sides.

Add '0.006944444447' to each side of the equation.
0.1666666667x + 0.006944444447 + x2 = 20.55555556 + 0.006944444447

Reorder the terms:
0.006944444447 + 0.1666666667x + x2 = 20.55555556 + 0.006944444447

Combine like terms: 20.55555556 + 0.006944444447 = 20.562500004447
0.006944444447 + 0.1666666667x + x2 = 20.562500004447

Factor a perfect square on the left side:
(x + 0.08333333335)(x + 0.08333333335) = 20.562500004447

Calculate the square root of the right side: 4.534589287

Break this problem into two subproblems by setting 
(x + 0.08333333335) equal to 4.534589287 and -4.534589287.

Subproblem 1

x + 0.08333333335 = 4.534589287 Simplifying x + 0.08333333335 = 4.534589287 Reorder the terms: 0.08333333335 + x = 4.534589287 Solving 0.08333333335 + x = 4.534589287 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.08333333335' to each side of the equation. 0.08333333335 + -0.08333333335 + x = 4.534589287 + -0.08333333335 Combine like terms: 0.08333333335 + -0.08333333335 = 0.00000000000 0.00000000000 + x = 4.534589287 + -0.08333333335 x = 4.534589287 + -0.08333333335 Combine like terms: 4.534589287 + -0.08333333335 = 4.45125595365 x = 4.45125595365 Simplifying x = 4.45125595365

Subproblem 2

x + 0.08333333335 = -4.534589287 Simplifying x + 0.08333333335 = -4.534589287 Reorder the terms: 0.08333333335 + x = -4.534589287 Solving 0.08333333335 + x = -4.534589287 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.08333333335' to each side of the equation. 0.08333333335 + -0.08333333335 + x = -4.534589287 + -0.08333333335 Combine like terms: 0.08333333335 + -0.08333333335 = 0.00000000000 0.00000000000 + x = -4.534589287 + -0.08333333335 x = -4.534589287 + -0.08333333335 Combine like terms: -4.534589287 + -0.08333333335 = -4.61792262035 x = -4.61792262035 Simplifying x = -4.61792262035

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.45125595365, -4.61792262035}

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