(2s*2s)+s=30

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Solution for (2s*2s)+s=30 equation:


Simplifying
(2s * 2s) + s = 30

Reorder the terms for easier multiplication:
(2 * 2s * s) + s = 30

Multiply 2 * 2
(4s * s) + s = 30

Multiply s * s
(4s2) + s = 30

Reorder the terms:
s + (4s2) = 30

Solving
s + (4s2) = 30

Solving for variable 's'.

Reorder the terms:
-30 + s + (4s2) = 30 + -30

Combine like terms: 30 + -30 = 0
-30 + s + (4s2) = 0

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

Divide each side by '4'.
-7.5 + 0.25s + s2 = 0

Move the constant term to the right:

Add '7.5' to each side of the equation.
-7.5 + 0.25s + 7.5 + s2 = 0 + 7.5

Reorder the terms:
-7.5 + 7.5 + 0.25s + s2 = 0 + 7.5

Combine like terms: -7.5 + 7.5 = 0.0
0.0 + 0.25s + s2 = 0 + 7.5
0.25s + s2 = 0 + 7.5

Combine like terms: 0 + 7.5 = 7.5
0.25s + s2 = 7.5

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.
0.25s + 0.25 + s2 = 7.5 + 0.25

Reorder the terms:
0.25 + 0.25s + s2 = 7.5 + 0.25

Combine like terms: 7.5 + 0.25 = 7.75
0.25 + 0.25s + s2 = 7.75

Factor a perfect square on the left side:
((s) + 0.5)((s) + 0.5) = 7.75

Calculate the square root of the right side: 2.783882181

Break this problem into two subproblems by setting 
((s) + 0.5) equal to 2.783882181 and -2.783882181.

Subproblem 1

(s) + 0.5 = 2.783882181 Simplifying (s) + 0.5 = 2.783882181 s + 0.5 = 2.783882181 Reorder the terms: 0.5 + s = 2.783882181 Solving 0.5 + s = 2.783882181 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 = 2.783882181 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + s = 2.783882181 + -0.5 s = 2.783882181 + -0.5 Combine like terms: 2.783882181 + -0.5 = 2.283882181 s = 2.283882181 Simplifying s = 2.283882181

Subproblem 2

(s) + 0.5 = -2.783882181 Simplifying (s) + 0.5 = -2.783882181 s + 0.5 = -2.783882181 Reorder the terms: 0.5 + s = -2.783882181 Solving 0.5 + s = -2.783882181 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 = -2.783882181 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + s = -2.783882181 + -0.5 s = -2.783882181 + -0.5 Combine like terms: -2.783882181 + -0.5 = -3.283882181 s = -3.283882181 Simplifying s = -3.283882181

Solution

The solution to the problem is based on the solutions from the subproblems. s = {2.283882181, -3.283882181}

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