s^2+18s-34=49

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Solution for s^2+18s-34=49 equation:


Simplifying
s2 + 18s + -34 = 49

Reorder the terms:
-34 + 18s + s2 = 49

Solving
-34 + 18s + s2 = 49

Solving for variable 's'.

Reorder the terms:
-34 + -49 + 18s + s2 = 49 + -49

Combine like terms: -34 + -49 = -83
-83 + 18s + s2 = 49 + -49

Combine like terms: 49 + -49 = 0
-83 + 18s + s2 = 0

Begin completing the square.

Move the constant term to the right:

Add '83' to each side of the equation.
-83 + 18s + 83 + s2 = 0 + 83

Reorder the terms:
-83 + 83 + 18s + s2 = 0 + 83

Combine like terms: -83 + 83 = 0
0 + 18s + s2 = 0 + 83
18s + s2 = 0 + 83

Combine like terms: 0 + 83 = 83
18s + s2 = 83

The s term is 18s.  Take half its coefficient (9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
18s + 81 + s2 = 83 + 81

Reorder the terms:
81 + 18s + s2 = 83 + 81

Combine like terms: 83 + 81 = 164
81 + 18s + s2 = 164

Factor a perfect square on the left side:
(s + 9)(s + 9) = 164

Calculate the square root of the right side: 12.806248475

Break this problem into two subproblems by setting 
(s + 9) equal to 12.806248475 and -12.806248475.

Subproblem 1

s + 9 = 12.806248475 Simplifying s + 9 = 12.806248475 Reorder the terms: 9 + s = 12.806248475 Solving 9 + s = 12.806248475 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + s = 12.806248475 + -9 Combine like terms: 9 + -9 = 0 0 + s = 12.806248475 + -9 s = 12.806248475 + -9 Combine like terms: 12.806248475 + -9 = 3.806248475 s = 3.806248475 Simplifying s = 3.806248475

Subproblem 2

s + 9 = -12.806248475 Simplifying s + 9 = -12.806248475 Reorder the terms: 9 + s = -12.806248475 Solving 9 + s = -12.806248475 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + s = -12.806248475 + -9 Combine like terms: 9 + -9 = 0 0 + s = -12.806248475 + -9 s = -12.806248475 + -9 Combine like terms: -12.806248475 + -9 = -21.806248475 s = -21.806248475 Simplifying s = -21.806248475

Solution

The solution to the problem is based on the solutions from the subproblems. s = {3.806248475, -21.806248475}

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