s^2+14s-31=33

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Solution for s^2+14s-31=33 equation:


Simplifying
s2 + 14s + -31 = 33

Reorder the terms:
-31 + 14s + s2 = 33

Solving
-31 + 14s + s2 = 33

Solving for variable 's'.

Reorder the terms:
-31 + -33 + 14s + s2 = 33 + -33

Combine like terms: -31 + -33 = -64
-64 + 14s + s2 = 33 + -33

Combine like terms: 33 + -33 = 0
-64 + 14s + s2 = 0

Begin completing the square.

Move the constant term to the right:

Add '64' to each side of the equation.
-64 + 14s + 64 + s2 = 0 + 64

Reorder the terms:
-64 + 64 + 14s + s2 = 0 + 64

Combine like terms: -64 + 64 = 0
0 + 14s + s2 = 0 + 64
14s + s2 = 0 + 64

Combine like terms: 0 + 64 = 64
14s + s2 = 64

The s term is 14s.  Take half its coefficient (7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
14s + 49 + s2 = 64 + 49

Reorder the terms:
49 + 14s + s2 = 64 + 49

Combine like terms: 64 + 49 = 113
49 + 14s + s2 = 113

Factor a perfect square on the left side:
(s + 7)(s + 7) = 113

Calculate the square root of the right side: 10.630145813

Break this problem into two subproblems by setting 
(s + 7) equal to 10.630145813 and -10.630145813.

Subproblem 1

s + 7 = 10.630145813 Simplifying s + 7 = 10.630145813 Reorder the terms: 7 + s = 10.630145813 Solving 7 + s = 10.630145813 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + s = 10.630145813 + -7 Combine like terms: 7 + -7 = 0 0 + s = 10.630145813 + -7 s = 10.630145813 + -7 Combine like terms: 10.630145813 + -7 = 3.630145813 s = 3.630145813 Simplifying s = 3.630145813

Subproblem 2

s + 7 = -10.630145813 Simplifying s + 7 = -10.630145813 Reorder the terms: 7 + s = -10.630145813 Solving 7 + s = -10.630145813 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + s = -10.630145813 + -7 Combine like terms: 7 + -7 = 0 0 + s = -10.630145813 + -7 s = -10.630145813 + -7 Combine like terms: -10.630145813 + -7 = -17.630145813 s = -17.630145813 Simplifying s = -17.630145813

Solution

The solution to the problem is based on the solutions from the subproblems. s = {3.630145813, -17.630145813}

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