5s^2-26s=25

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Solution for 5s^2-26s=25 equation:


Simplifying
5s2 + -26s = 25

Reorder the terms:
-26s + 5s2 = 25

Solving
-26s + 5s2 = 25

Solving for variable 's'.

Reorder the terms:
-25 + -26s + 5s2 = 25 + -25

Combine like terms: 25 + -25 = 0
-25 + -26s + 5s2 = 0

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

Divide each side by '5'.
-5 + -5.2s + s2 = 0

Move the constant term to the right:

Add '5' to each side of the equation.
-5 + -5.2s + 5 + s2 = 0 + 5

Reorder the terms:
-5 + 5 + -5.2s + s2 = 0 + 5

Combine like terms: -5 + 5 = 0
0 + -5.2s + s2 = 0 + 5
-5.2s + s2 = 0 + 5

Combine like terms: 0 + 5 = 5
-5.2s + s2 = 5

The s term is -5.2s.  Take half its coefficient (-2.6).
Square it (6.76) and add it to both sides.

Add '6.76' to each side of the equation.
-5.2s + 6.76 + s2 = 5 + 6.76

Reorder the terms:
6.76 + -5.2s + s2 = 5 + 6.76

Combine like terms: 5 + 6.76 = 11.76
6.76 + -5.2s + s2 = 11.76

Factor a perfect square on the left side:
(s + -2.6)(s + -2.6) = 11.76

Calculate the square root of the right side: 3.42928564

Break this problem into two subproblems by setting 
(s + -2.6) equal to 3.42928564 and -3.42928564.

Subproblem 1

s + -2.6 = 3.42928564 Simplifying s + -2.6 = 3.42928564 Reorder the terms: -2.6 + s = 3.42928564 Solving -2.6 + s = 3.42928564 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '2.6' to each side of the equation. -2.6 + 2.6 + s = 3.42928564 + 2.6 Combine like terms: -2.6 + 2.6 = 0.0 0.0 + s = 3.42928564 + 2.6 s = 3.42928564 + 2.6 Combine like terms: 3.42928564 + 2.6 = 6.02928564 s = 6.02928564 Simplifying s = 6.02928564

Subproblem 2

s + -2.6 = -3.42928564 Simplifying s + -2.6 = -3.42928564 Reorder the terms: -2.6 + s = -3.42928564 Solving -2.6 + s = -3.42928564 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '2.6' to each side of the equation. -2.6 + 2.6 + s = -3.42928564 + 2.6 Combine like terms: -2.6 + 2.6 = 0.0 0.0 + s = -3.42928564 + 2.6 s = -3.42928564 + 2.6 Combine like terms: -3.42928564 + 2.6 = -0.82928564 s = -0.82928564 Simplifying s = -0.82928564

Solution

The solution to the problem is based on the solutions from the subproblems. s = {6.02928564, -0.82928564}

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