s^2-25=10s+25

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Solution for s^2-25=10s+25 equation:


Simplifying
s2 + -25 = 10s + 25

Reorder the terms:
-25 + s2 = 10s + 25

Reorder the terms:
-25 + s2 = 25 + 10s

Solving
-25 + s2 = 25 + 10s

Solving for variable 's'.

Reorder the terms:
-25 + -25 + -10s + s2 = 25 + 10s + -25 + -10s

Combine like terms: -25 + -25 = -50
-50 + -10s + s2 = 25 + 10s + -25 + -10s

Reorder the terms:
-50 + -10s + s2 = 25 + -25 + 10s + -10s

Combine like terms: 25 + -25 = 0
-50 + -10s + s2 = 0 + 10s + -10s
-50 + -10s + s2 = 10s + -10s

Combine like terms: 10s + -10s = 0
-50 + -10s + s2 = 0

Begin completing the square.

Move the constant term to the right:

Add '50' to each side of the equation.
-50 + -10s + 50 + s2 = 0 + 50

Reorder the terms:
-50 + 50 + -10s + s2 = 0 + 50

Combine like terms: -50 + 50 = 0
0 + -10s + s2 = 0 + 50
-10s + s2 = 0 + 50

Combine like terms: 0 + 50 = 50
-10s + s2 = 50

The s term is -10s.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10s + 25 + s2 = 50 + 25

Reorder the terms:
25 + -10s + s2 = 50 + 25

Combine like terms: 50 + 25 = 75
25 + -10s + s2 = 75

Factor a perfect square on the left side:
(s + -5)(s + -5) = 75

Calculate the square root of the right side: 8.660254038

Break this problem into two subproblems by setting 
(s + -5) equal to 8.660254038 and -8.660254038.

Subproblem 1

s + -5 = 8.660254038 Simplifying s + -5 = 8.660254038 Reorder the terms: -5 + s = 8.660254038 Solving -5 + s = 8.660254038 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + s = 8.660254038 + 5 Combine like terms: -5 + 5 = 0 0 + s = 8.660254038 + 5 s = 8.660254038 + 5 Combine like terms: 8.660254038 + 5 = 13.660254038 s = 13.660254038 Simplifying s = 13.660254038

Subproblem 2

s + -5 = -8.660254038 Simplifying s + -5 = -8.660254038 Reorder the terms: -5 + s = -8.660254038 Solving -5 + s = -8.660254038 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + s = -8.660254038 + 5 Combine like terms: -5 + 5 = 0 0 + s = -8.660254038 + 5 s = -8.660254038 + 5 Combine like terms: -8.660254038 + 5 = -3.660254038 s = -3.660254038 Simplifying s = -3.660254038

Solution

The solution to the problem is based on the solutions from the subproblems. s = {13.660254038, -3.660254038}

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