5x^2=24x-12.6

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Solution for 5x^2=24x-12.6 equation:


Simplifying
5x2 = 24x + -12.6

Reorder the terms:
5x2 = -12.6 + 24x

Solving
5x2 = -12.6 + 24x

Solving for variable 'x'.

Reorder the terms:
12.6 + -24x + 5x2 = -12.6 + 24x + 12.6 + -24x

Reorder the terms:
12.6 + -24x + 5x2 = -12.6 + 12.6 + 24x + -24x

Combine like terms: -12.6 + 12.6 = 0.0
12.6 + -24x + 5x2 = 0.0 + 24x + -24x
12.6 + -24x + 5x2 = 24x + -24x

Combine like terms: 24x + -24x = 0
12.6 + -24x + 5x2 = 0

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

Divide each side by '5'.
2.52 + -4.8x + x2 = 0

Move the constant term to the right:

Add '-2.52' to each side of the equation.
2.52 + -4.8x + -2.52 + x2 = 0 + -2.52

Reorder the terms:
2.52 + -2.52 + -4.8x + x2 = 0 + -2.52

Combine like terms: 2.52 + -2.52 = 0.00
0.00 + -4.8x + x2 = 0 + -2.52
-4.8x + x2 = 0 + -2.52

Combine like terms: 0 + -2.52 = -2.52
-4.8x + x2 = -2.52

The x term is -4.8x.  Take half its coefficient (-2.4).
Square it (5.76) and add it to both sides.

Add '5.76' to each side of the equation.
-4.8x + 5.76 + x2 = -2.52 + 5.76

Reorder the terms:
5.76 + -4.8x + x2 = -2.52 + 5.76

Combine like terms: -2.52 + 5.76 = 3.24
5.76 + -4.8x + x2 = 3.24

Factor a perfect square on the left side:
(x + -2.4)(x + -2.4) = 3.24

Calculate the square root of the right side: 1.8

Break this problem into two subproblems by setting 
(x + -2.4) equal to 1.8 and -1.8.

Subproblem 1

x + -2.4 = 1.8 Simplifying x + -2.4 = 1.8 Reorder the terms: -2.4 + x = 1.8 Solving -2.4 + x = 1.8 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.4' to each side of the equation. -2.4 + 2.4 + x = 1.8 + 2.4 Combine like terms: -2.4 + 2.4 = 0.0 0.0 + x = 1.8 + 2.4 x = 1.8 + 2.4 Combine like terms: 1.8 + 2.4 = 4.2 x = 4.2 Simplifying x = 4.2

Subproblem 2

x + -2.4 = -1.8 Simplifying x + -2.4 = -1.8 Reorder the terms: -2.4 + x = -1.8 Solving -2.4 + x = -1.8 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.4' to each side of the equation. -2.4 + 2.4 + x = -1.8 + 2.4 Combine like terms: -2.4 + 2.4 = 0.0 0.0 + x = -1.8 + 2.4 x = -1.8 + 2.4 Combine like terms: -1.8 + 2.4 = 0.6 x = 0.6 Simplifying x = 0.6

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.2, 0.6}

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