5s^2+s=1

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Solution for 5s^2+s=1 equation:


Simplifying
5s2 + s = 1

Reorder the terms:
s + 5s2 = 1

Solving
s + 5s2 = 1

Solving for variable 's'.

Reorder the terms:
-1 + s + 5s2 = 1 + -1

Combine like terms: 1 + -1 = 0
-1 + s + 5s2 = 0

Begin completing the square.  Divide all terms by
5 the coefficient of the squared term: 

Divide each side by '5'.
-0.2 + 0.2s + s2 = 0

Move the constant term to the right:

Add '0.2' to each side of the equation.
-0.2 + 0.2s + 0.2 + s2 = 0 + 0.2

Reorder the terms:
-0.2 + 0.2 + 0.2s + s2 = 0 + 0.2

Combine like terms: -0.2 + 0.2 = 0.0
0.0 + 0.2s + s2 = 0 + 0.2
0.2s + s2 = 0 + 0.2

Combine like terms: 0 + 0.2 = 0.2
0.2s + s2 = 0.2

The s term is s.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.2s + 0.25 + s2 = 0.2 + 0.25

Reorder the terms:
0.25 + 0.2s + s2 = 0.2 + 0.25

Combine like terms: 0.2 + 0.25 = 0.45
0.25 + 0.2s + s2 = 0.45

Factor a perfect square on the left side:
(s + 0.5)(s + 0.5) = 0.45

Calculate the square root of the right side: 0.670820393

Break this problem into two subproblems by setting 
(s + 0.5) equal to 0.670820393 and -0.670820393.

Subproblem 1

s + 0.5 = 0.670820393 Simplifying s + 0.5 = 0.670820393 Reorder the terms: 0.5 + s = 0.670820393 Solving 0.5 + s = 0.670820393 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + s = 0.670820393 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + s = 0.670820393 + -0.5 s = 0.670820393 + -0.5 Combine like terms: 0.670820393 + -0.5 = 0.170820393 s = 0.170820393 Simplifying s = 0.170820393

Subproblem 2

s + 0.5 = -0.670820393 Simplifying s + 0.5 = -0.670820393 Reorder the terms: 0.5 + s = -0.670820393 Solving 0.5 + s = -0.670820393 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + s = -0.670820393 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + s = -0.670820393 + -0.5 s = -0.670820393 + -0.5 Combine like terms: -0.670820393 + -0.5 = -1.170820393 s = -1.170820393 Simplifying s = -1.170820393

Solution

The solution to the problem is based on the solutions from the subproblems. s = {0.170820393, -1.170820393}

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