s^2-7s=48

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Solution for s^2-7s=48 equation:


Simplifying
s2 + -7s = 48

Reorder the terms:
-7s + s2 = 48

Solving
-7s + s2 = 48

Solving for variable 's'.

Reorder the terms:
-48 + -7s + s2 = 48 + -48

Combine like terms: 48 + -48 = 0
-48 + -7s + s2 = 0

Begin completing the square.

Move the constant term to the right:

Add '48' to each side of the equation.
-48 + -7s + 48 + s2 = 0 + 48

Reorder the terms:
-48 + 48 + -7s + s2 = 0 + 48

Combine like terms: -48 + 48 = 0
0 + -7s + s2 = 0 + 48
-7s + s2 = 0 + 48

Combine like terms: 0 + 48 = 48
-7s + s2 = 48

The s term is -7s.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7s + 12.25 + s2 = 48 + 12.25

Reorder the terms:
12.25 + -7s + s2 = 48 + 12.25

Combine like terms: 48 + 12.25 = 60.25
12.25 + -7s + s2 = 60.25

Factor a perfect square on the left side:
(s + -3.5)(s + -3.5) = 60.25

Calculate the square root of the right side: 7.762087348

Break this problem into two subproblems by setting 
(s + -3.5) equal to 7.762087348 and -7.762087348.

Subproblem 1

s + -3.5 = 7.762087348 Simplifying s + -3.5 = 7.762087348 Reorder the terms: -3.5 + s = 7.762087348 Solving -3.5 + s = 7.762087348 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + s = 7.762087348 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + s = 7.762087348 + 3.5 s = 7.762087348 + 3.5 Combine like terms: 7.762087348 + 3.5 = 11.262087348 s = 11.262087348 Simplifying s = 11.262087348

Subproblem 2

s + -3.5 = -7.762087348 Simplifying s + -3.5 = -7.762087348 Reorder the terms: -3.5 + s = -7.762087348 Solving -3.5 + s = -7.762087348 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + s = -7.762087348 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + s = -7.762087348 + 3.5 s = -7.762087348 + 3.5 Combine like terms: -7.762087348 + 3.5 = -4.262087348 s = -4.262087348 Simplifying s = -4.262087348

Solution

The solution to the problem is based on the solutions from the subproblems. s = {11.262087348, -4.262087348}

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