120+26x+x^2=144

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Solution for 120+26x+x^2=144 equation:


Simplifying
120 + 26x + x2 = 144

Solving
120 + 26x + x2 = 144

Solving for variable 'x'.

Reorder the terms:
120 + -144 + 26x + x2 = 144 + -144

Combine like terms: 120 + -144 = -24
-24 + 26x + x2 = 144 + -144

Combine like terms: 144 + -144 = 0
-24 + 26x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '24' to each side of the equation.
-24 + 26x + 24 + x2 = 0 + 24

Reorder the terms:
-24 + 24 + 26x + x2 = 0 + 24

Combine like terms: -24 + 24 = 0
0 + 26x + x2 = 0 + 24
26x + x2 = 0 + 24

Combine like terms: 0 + 24 = 24
26x + x2 = 24

The x term is 26x.  Take half its coefficient (13).
Square it (169) and add it to both sides.

Add '169' to each side of the equation.
26x + 169 + x2 = 24 + 169

Reorder the terms:
169 + 26x + x2 = 24 + 169

Combine like terms: 24 + 169 = 193
169 + 26x + x2 = 193

Factor a perfect square on the left side:
(x + 13)(x + 13) = 193

Calculate the square root of the right side: 13.892443989

Break this problem into two subproblems by setting 
(x + 13) equal to 13.892443989 and -13.892443989.

Subproblem 1

x + 13 = 13.892443989 Simplifying x + 13 = 13.892443989 Reorder the terms: 13 + x = 13.892443989 Solving 13 + x = 13.892443989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + x = 13.892443989 + -13 Combine like terms: 13 + -13 = 0 0 + x = 13.892443989 + -13 x = 13.892443989 + -13 Combine like terms: 13.892443989 + -13 = 0.892443989 x = 0.892443989 Simplifying x = 0.892443989

Subproblem 2

x + 13 = -13.892443989 Simplifying x + 13 = -13.892443989 Reorder the terms: 13 + x = -13.892443989 Solving 13 + x = -13.892443989 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + -13 + x = -13.892443989 + -13 Combine like terms: 13 + -13 = 0 0 + x = -13.892443989 + -13 x = -13.892443989 + -13 Combine like terms: -13.892443989 + -13 = -26.892443989 x = -26.892443989 Simplifying x = -26.892443989

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.892443989, -26.892443989}

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