x^2+10x-3=17

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Solution for x^2+10x-3=17 equation:


Simplifying
x2 + 10x + -3 = 17

Reorder the terms:
-3 + 10x + x2 = 17

Solving
-3 + 10x + x2 = 17

Solving for variable 'x'.

Reorder the terms:
-3 + -17 + 10x + x2 = 17 + -17

Combine like terms: -3 + -17 = -20
-20 + 10x + x2 = 17 + -17

Combine like terms: 17 + -17 = 0
-20 + 10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '20' to each side of the equation.
-20 + 10x + 20 + x2 = 0 + 20

Reorder the terms:
-20 + 20 + 10x + x2 = 0 + 20

Combine like terms: -20 + 20 = 0
0 + 10x + x2 = 0 + 20
10x + x2 = 0 + 20

Combine like terms: 0 + 20 = 20
10x + x2 = 20

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 = 20 + 25

Reorder the terms:
25 + 10x + x2 = 20 + 25

Combine like terms: 20 + 25 = 45
25 + 10x + x2 = 45

Factor a perfect square on the left side:
(x + 5)(x + 5) = 45

Calculate the square root of the right side: 6.708203933

Break this problem into two subproblems by setting 
(x + 5) equal to 6.708203933 and -6.708203933.

Subproblem 1

x + 5 = 6.708203933 Simplifying x + 5 = 6.708203933 Reorder the terms: 5 + x = 6.708203933 Solving 5 + x = 6.708203933 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 = 6.708203933 + -5 Combine like terms: 5 + -5 = 0 0 + x = 6.708203933 + -5 x = 6.708203933 + -5 Combine like terms: 6.708203933 + -5 = 1.708203933 x = 1.708203933 Simplifying x = 1.708203933

Subproblem 2

x + 5 = -6.708203933 Simplifying x + 5 = -6.708203933 Reorder the terms: 5 + x = -6.708203933 Solving 5 + x = -6.708203933 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 = -6.708203933 + -5 Combine like terms: 5 + -5 = 0 0 + x = -6.708203933 + -5 x = -6.708203933 + -5 Combine like terms: -6.708203933 + -5 = -11.708203933 x = -11.708203933 Simplifying x = -11.708203933

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.708203933, -11.708203933}

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