x^2+10x-144=3

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Solution for x^2+10x-144=3 equation:


Simplifying
x2 + 10x + -144 = 3

Reorder the terms:
-144 + 10x + x2 = 3

Solving
-144 + 10x + x2 = 3

Solving for variable 'x'.

Reorder the terms:
-144 + -3 + 10x + x2 = 3 + -3

Combine like terms: -144 + -3 = -147
-147 + 10x + x2 = 3 + -3

Combine like terms: 3 + -3 = 0
-147 + 10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '147' to each side of the equation.
-147 + 10x + 147 + x2 = 0 + 147

Reorder the terms:
-147 + 147 + 10x + x2 = 0 + 147

Combine like terms: -147 + 147 = 0
0 + 10x + x2 = 0 + 147
10x + x2 = 0 + 147

Combine like terms: 0 + 147 = 147
10x + x2 = 147

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = 147 + 25

Reorder the terms:
25 + 10x + x2 = 147 + 25

Combine like terms: 147 + 25 = 172
25 + 10x + x2 = 172

Factor a perfect square on the left side:
(x + 5)(x + 5) = 172

Calculate the square root of the right side: 13.114877049

Break this problem into two subproblems by setting 
(x + 5) equal to 13.114877049 and -13.114877049.

Subproblem 1

x + 5 = 13.114877049 Simplifying x + 5 = 13.114877049 Reorder the terms: 5 + x = 13.114877049 Solving 5 + x = 13.114877049 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 13.114877049 + -5 Combine like terms: 5 + -5 = 0 0 + x = 13.114877049 + -5 x = 13.114877049 + -5 Combine like terms: 13.114877049 + -5 = 8.114877049 x = 8.114877049 Simplifying x = 8.114877049

Subproblem 2

x + 5 = -13.114877049 Simplifying x + 5 = -13.114877049 Reorder the terms: 5 + x = -13.114877049 Solving 5 + x = -13.114877049 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -13.114877049 + -5 Combine like terms: 5 + -5 = 0 0 + x = -13.114877049 + -5 x = -13.114877049 + -5 Combine like terms: -13.114877049 + -5 = -18.114877049 x = -18.114877049 Simplifying x = -18.114877049

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.114877049, -18.114877049}

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