49s^2+28s=4

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Solution for 49s^2+28s=4 equation:


Simplifying
49s2 + 28s = 4

Reorder the terms:
28s + 49s2 = 4

Solving
28s + 49s2 = 4

Solving for variable 's'.

Reorder the terms:
-4 + 28s + 49s2 = 4 + -4

Combine like terms: 4 + -4 = 0
-4 + 28s + 49s2 = 0

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

Divide each side by '49'.
-0.08163265306 + 0.5714285714s + s2 = 0

Move the constant term to the right:

Add '0.08163265306' to each side of the equation.
-0.08163265306 + 0.5714285714s + 0.08163265306 + s2 = 0 + 0.08163265306

Reorder the terms:
-0.08163265306 + 0.08163265306 + 0.5714285714s + s2 = 0 + 0.08163265306

Combine like terms: -0.08163265306 + 0.08163265306 = 0.00000000000
0.00000000000 + 0.5714285714s + s2 = 0 + 0.08163265306
0.5714285714s + s2 = 0 + 0.08163265306

Combine like terms: 0 + 0.08163265306 = 0.08163265306
0.5714285714s + s2 = 0.08163265306

The s term is 0.5714285714s.  Take half its coefficient (0.2857142857).
Square it (0.08163265305) and add it to both sides.

Add '0.08163265305' to each side of the equation.
0.5714285714s + 0.08163265305 + s2 = 0.08163265306 + 0.08163265305

Reorder the terms:
0.08163265305 + 0.5714285714s + s2 = 0.08163265306 + 0.08163265305

Combine like terms: 0.08163265306 + 0.08163265305 = 0.16326530611
0.08163265305 + 0.5714285714s + s2 = 0.16326530611

Factor a perfect square on the left side:
(s + 0.2857142857)(s + 0.2857142857) = 0.16326530611

Calculate the square root of the right side: 0.404061018

Break this problem into two subproblems by setting 
(s + 0.2857142857) equal to 0.404061018 and -0.404061018.

Subproblem 1

s + 0.2857142857 = 0.404061018 Simplifying s + 0.2857142857 = 0.404061018 Reorder the terms: 0.2857142857 + s = 0.404061018 Solving 0.2857142857 + s = 0.404061018 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-0.2857142857' to each side of the equation. 0.2857142857 + -0.2857142857 + s = 0.404061018 + -0.2857142857 Combine like terms: 0.2857142857 + -0.2857142857 = 0.0000000000 0.0000000000 + s = 0.404061018 + -0.2857142857 s = 0.404061018 + -0.2857142857 Combine like terms: 0.404061018 + -0.2857142857 = 0.1183467323 s = 0.1183467323 Simplifying s = 0.1183467323

Subproblem 2

s + 0.2857142857 = -0.404061018 Simplifying s + 0.2857142857 = -0.404061018 Reorder the terms: 0.2857142857 + s = -0.404061018 Solving 0.2857142857 + s = -0.404061018 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '-0.2857142857' to each side of the equation. 0.2857142857 + -0.2857142857 + s = -0.404061018 + -0.2857142857 Combine like terms: 0.2857142857 + -0.2857142857 = 0.0000000000 0.0000000000 + s = -0.404061018 + -0.2857142857 s = -0.404061018 + -0.2857142857 Combine like terms: -0.404061018 + -0.2857142857 = -0.6897753037 s = -0.6897753037 Simplifying s = -0.6897753037

Solution

The solution to the problem is based on the solutions from the subproblems. s = {0.1183467323, -0.6897753037}

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