5x^2+24x-20=0

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Solution for 5x^2+24x-20=0 equation:


Simplifying
5x2 + 24x + -20 = 0

Reorder the terms:
-20 + 24x + 5x2 = 0

Solving
-20 + 24x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
-4 + 4.8x + x2 = 0

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + 4.8x + 4 + x2 = 0 + 4

Reorder the terms:
-4 + 4 + 4.8x + x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 4.8x + x2 = 0 + 4
4.8x + x2 = 0 + 4

Combine like terms: 0 + 4 = 4
4.8x + x2 = 4

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 = 4 + 5.76

Reorder the terms:
5.76 + 4.8x + x2 = 4 + 5.76

Combine like terms: 4 + 5.76 = 9.76
5.76 + 4.8x + x2 = 9.76

Factor a perfect square on the left side:
(x + 2.4)(x + 2.4) = 9.76

Calculate the square root of the right side: 3.12409987

Break this problem into two subproblems by setting 
(x + 2.4) equal to 3.12409987 and -3.12409987.

Subproblem 1

x + 2.4 = 3.12409987 Simplifying x + 2.4 = 3.12409987 Reorder the terms: 2.4 + x = 3.12409987 Solving 2.4 + x = 3.12409987 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 = 3.12409987 + -2.4 Combine like terms: 2.4 + -2.4 = 0.0 0.0 + x = 3.12409987 + -2.4 x = 3.12409987 + -2.4 Combine like terms: 3.12409987 + -2.4 = 0.72409987 x = 0.72409987 Simplifying x = 0.72409987

Subproblem 2

x + 2.4 = -3.12409987 Simplifying x + 2.4 = -3.12409987 Reorder the terms: 2.4 + x = -3.12409987 Solving 2.4 + x = -3.12409987 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 = -3.12409987 + -2.4 Combine like terms: 2.4 + -2.4 = 0.0 0.0 + x = -3.12409987 + -2.4 x = -3.12409987 + -2.4 Combine like terms: -3.12409987 + -2.4 = -5.52409987 x = -5.52409987 Simplifying x = -5.52409987

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.72409987, -5.52409987}

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