3x^2-19x=24

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Solution for 3x^2-19x=24 equation:


Simplifying
3x2 + -19x = 24

Reorder the terms:
-19x + 3x2 = 24

Solving
-19x + 3x2 = 24

Solving for variable 'x'.

Reorder the terms:
-24 + -19x + 3x2 = 24 + -24

Combine like terms: 24 + -24 = 0
-24 + -19x + 3x2 = 0

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

Divide each side by '3'.
-8 + -6.333333333x + x2 = 0

Move the constant term to the right:

Add '8' to each side of the equation.
-8 + -6.333333333x + 8 + x2 = 0 + 8

Reorder the terms:
-8 + 8 + -6.333333333x + x2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + -6.333333333x + x2 = 0 + 8
-6.333333333x + x2 = 0 + 8

Combine like terms: 0 + 8 = 8
-6.333333333x + x2 = 8

The x term is -6.333333333x.  Take half its coefficient (-3.166666667).
Square it (10.02777778) and add it to both sides.

Add '10.02777778' to each side of the equation.
-6.333333333x + 10.02777778 + x2 = 8 + 10.02777778

Reorder the terms:
10.02777778 + -6.333333333x + x2 = 8 + 10.02777778

Combine like terms: 8 + 10.02777778 = 18.02777778
10.02777778 + -6.333333333x + x2 = 18.02777778

Factor a perfect square on the left side:
(x + -3.166666667)(x + -3.166666667) = 18.02777778

Calculate the square root of the right side: 4.245913068

Break this problem into two subproblems by setting 
(x + -3.166666667) equal to 4.245913068 and -4.245913068.

Subproblem 1

x + -3.166666667 = 4.245913068 Simplifying x + -3.166666667 = 4.245913068 Reorder the terms: -3.166666667 + x = 4.245913068 Solving -3.166666667 + x = 4.245913068 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.166666667' to each side of the equation. -3.166666667 + 3.166666667 + x = 4.245913068 + 3.166666667 Combine like terms: -3.166666667 + 3.166666667 = 0.000000000 0.000000000 + x = 4.245913068 + 3.166666667 x = 4.245913068 + 3.166666667 Combine like terms: 4.245913068 + 3.166666667 = 7.412579735 x = 7.412579735 Simplifying x = 7.412579735

Subproblem 2

x + -3.166666667 = -4.245913068 Simplifying x + -3.166666667 = -4.245913068 Reorder the terms: -3.166666667 + x = -4.245913068 Solving -3.166666667 + x = -4.245913068 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.166666667' to each side of the equation. -3.166666667 + 3.166666667 + x = -4.245913068 + 3.166666667 Combine like terms: -3.166666667 + 3.166666667 = 0.000000000 0.000000000 + x = -4.245913068 + 3.166666667 x = -4.245913068 + 3.166666667 Combine like terms: -4.245913068 + 3.166666667 = -1.079246401 x = -1.079246401 Simplifying x = -1.079246401

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.412579735, -1.079246401}

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