x^2+10x-290=0

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Solution for x^2+10x-290=0 equation:


Simplifying
x2 + 10x + -290 = 0

Reorder the terms:
-290 + 10x + x2 = 0

Solving
-290 + 10x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '290' to each side of the equation.
-290 + 10x + 290 + x2 = 0 + 290

Reorder the terms:
-290 + 290 + 10x + x2 = 0 + 290

Combine like terms: -290 + 290 = 0
0 + 10x + x2 = 0 + 290
10x + x2 = 0 + 290

Combine like terms: 0 + 290 = 290
10x + x2 = 290

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 = 290 + 25

Reorder the terms:
25 + 10x + x2 = 290 + 25

Combine like terms: 290 + 25 = 315
25 + 10x + x2 = 315

Factor a perfect square on the left side:
(x + 5)(x + 5) = 315

Calculate the square root of the right side: 17.748239349

Break this problem into two subproblems by setting 
(x + 5) equal to 17.748239349 and -17.748239349.

Subproblem 1

x + 5 = 17.748239349 Simplifying x + 5 = 17.748239349 Reorder the terms: 5 + x = 17.748239349 Solving 5 + x = 17.748239349 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 = 17.748239349 + -5 Combine like terms: 5 + -5 = 0 0 + x = 17.748239349 + -5 x = 17.748239349 + -5 Combine like terms: 17.748239349 + -5 = 12.748239349 x = 12.748239349 Simplifying x = 12.748239349

Subproblem 2

x + 5 = -17.748239349 Simplifying x + 5 = -17.748239349 Reorder the terms: 5 + x = -17.748239349 Solving 5 + x = -17.748239349 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 = -17.748239349 + -5 Combine like terms: 5 + -5 = 0 0 + x = -17.748239349 + -5 x = -17.748239349 + -5 Combine like terms: -17.748239349 + -5 = -22.748239349 x = -22.748239349 Simplifying x = -22.748239349

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.748239349, -22.748239349}

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