11s^2+11sw-15w^2=0

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Solution for 11s^2+11sw-15w^2=0 equation:


Simplifying
11s2 + 11sw + -15w2 = 0

Reorder the terms:
11sw + 11s2 + -15w2 = 0

Solving
11sw + 11s2 + -15w2 = 0

Solving for variable 's'.

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

Divide each side by '11'.
sw + s2 + -1.363636364w2 = 0

Move the constant term to the right:

Add '1.363636364w2' to each side of the equation.
sw + s2 + -1.363636364w2 + 1.363636364w2 = 0 + 1.363636364w2

Combine like terms: -1.363636364w2 + 1.363636364w2 = 0.000000000
sw + s2 + 0.000000000 = 0 + 1.363636364w2
sw + s2 = 0 + 1.363636364w2
Remove the zero:
sw + s2 = 1.363636364w2

The s term is sw.  Take half its coefficient (0.5w).
Square it (0.25w2) and add it to both sides.

Add '0.25w2' to each side of the equation.
w2 + s2 + 0.25w2 = 1.363636364w2 + 0.25w2

Reorder the terms:
s2 + w2 + 0.25w2 = 1.363636364w2 + 0.25w2

Combine like terms: w2 + 0.25w2 = 1.25w2
s2 + 1.25w2 = 1.363636364w2 + 0.25w2

Combine like terms: 1.363636364w2 + 0.25w2 = 1.613636364w2
s2 + 1.25w2 = 1.613636364w2

Factor a perfect square on the left side:
(s + 0.5w)(s + 0.5w) = 1.613636364w2

Calculate the square root of the right side: 1.270289874w

Break this problem into two subproblems by setting 
(s + 0.5w) equal to 1.270289874w and -1.270289874w.

Subproblem 1

s + 0.5w = 1.270289874w Simplifying s + 0.5w = 1.270289874w Solving s + 0.5w = 1.270289874w Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-0.5w' to each side of the equation. s + 0.5w + -0.5w = 1.270289874w + -0.5w Combine like terms: 0.5w + -0.5w = 0.0 s + 0.0 = 1.270289874w + -0.5w s = 1.270289874w + -0.5w Combine like terms: 1.270289874w + -0.5w = 0.770289874w s = 0.770289874w Simplifying s = 0.770289874w

Subproblem 2

s + 0.5w = -1.270289874w Simplifying s + 0.5w = -1.270289874w Solving s + 0.5w = -1.270289874w Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-0.5w' to each side of the equation. s + 0.5w + -0.5w = -1.270289874w + -0.5w Combine like terms: 0.5w + -0.5w = 0.0 s + 0.0 = -1.270289874w + -0.5w s = -1.270289874w + -0.5w Combine like terms: -1.270289874w + -0.5w = -1.770289874w s = -1.770289874w Simplifying s = -1.770289874w

Solution

The solution to the problem is based on the solutions from the subproblems. s = {0.770289874w, -1.770289874w}

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