5x^2+24x+7=0

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Solution for 5x^2+24x+7=0 equation:


Simplifying
5x2 + 24x + 7 = 0

Reorder the terms:
7 + 24x + 5x2 = 0

Solving
7 + 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'.
1.4 + 4.8x + x2 = 0

Move the constant term to the right:

Add '-1.4' to each side of the equation.
1.4 + 4.8x + -1.4 + x2 = 0 + -1.4

Reorder the terms:
1.4 + -1.4 + 4.8x + x2 = 0 + -1.4

Combine like terms: 1.4 + -1.4 = 0.0
0.0 + 4.8x + x2 = 0 + -1.4
4.8x + x2 = 0 + -1.4

Combine like terms: 0 + -1.4 = -1.4
4.8x + x2 = -1.4

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 = -1.4 + 5.76

Reorder the terms:
5.76 + 4.8x + x2 = -1.4 + 5.76

Combine like terms: -1.4 + 5.76 = 4.36
5.76 + 4.8x + x2 = 4.36

Factor a perfect square on the left side:
(x + 2.4)(x + 2.4) = 4.36

Calculate the square root of the right side: 2.088061302

Break this problem into two subproblems by setting 
(x + 2.4) equal to 2.088061302 and -2.088061302.

Subproblem 1

x + 2.4 = 2.088061302 Simplifying x + 2.4 = 2.088061302 Reorder the terms: 2.4 + x = 2.088061302 Solving 2.4 + x = 2.088061302 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 = 2.088061302 + -2.4 Combine like terms: 2.4 + -2.4 = 0.0 0.0 + x = 2.088061302 + -2.4 x = 2.088061302 + -2.4 Combine like terms: 2.088061302 + -2.4 = -0.311938698 x = -0.311938698 Simplifying x = -0.311938698

Subproblem 2

x + 2.4 = -2.088061302 Simplifying x + 2.4 = -2.088061302 Reorder the terms: 2.4 + x = -2.088061302 Solving 2.4 + x = -2.088061302 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 = -2.088061302 + -2.4 Combine like terms: 2.4 + -2.4 = 0.0 0.0 + x = -2.088061302 + -2.4 x = -2.088061302 + -2.4 Combine like terms: -2.088061302 + -2.4 = -4.488061302 x = -4.488061302 Simplifying x = -4.488061302

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.311938698, -4.488061302}

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