x^2+24x+4=15

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Solution for x^2+24x+4=15 equation:


Simplifying
x2 + 24x + 4 = 15

Reorder the terms:
4 + 24x + x2 = 15

Solving
4 + 24x + x2 = 15

Solving for variable 'x'.

Reorder the terms:
4 + -15 + 24x + x2 = 15 + -15

Combine like terms: 4 + -15 = -11
-11 + 24x + x2 = 15 + -15

Combine like terms: 15 + -15 = 0
-11 + 24x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '11' to each side of the equation.
-11 + 24x + 11 + x2 = 0 + 11

Reorder the terms:
-11 + 11 + 24x + x2 = 0 + 11

Combine like terms: -11 + 11 = 0
0 + 24x + x2 = 0 + 11
24x + x2 = 0 + 11

Combine like terms: 0 + 11 = 11
24x + x2 = 11

The x term is 24x.  Take half its coefficient (12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
24x + 144 + x2 = 11 + 144

Reorder the terms:
144 + 24x + x2 = 11 + 144

Combine like terms: 11 + 144 = 155
144 + 24x + x2 = 155

Factor a perfect square on the left side:
(x + 12)(x + 12) = 155

Calculate the square root of the right side: 12.449899598

Break this problem into two subproblems by setting 
(x + 12) equal to 12.449899598 and -12.449899598.

Subproblem 1

x + 12 = 12.449899598 Simplifying x + 12 = 12.449899598 Reorder the terms: 12 + x = 12.449899598 Solving 12 + x = 12.449899598 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = 12.449899598 + -12 Combine like terms: 12 + -12 = 0 0 + x = 12.449899598 + -12 x = 12.449899598 + -12 Combine like terms: 12.449899598 + -12 = 0.449899598 x = 0.449899598 Simplifying x = 0.449899598

Subproblem 2

x + 12 = -12.449899598 Simplifying x + 12 = -12.449899598 Reorder the terms: 12 + x = -12.449899598 Solving 12 + x = -12.449899598 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + x = -12.449899598 + -12 Combine like terms: 12 + -12 = 0 0 + x = -12.449899598 + -12 x = -12.449899598 + -12 Combine like terms: -12.449899598 + -12 = -24.449899598 x = -24.449899598 Simplifying x = -24.449899598

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.449899598, -24.449899598}

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