s^2-3(s+3)=4

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Solution for s^2-3(s+3)=4 equation:


Simplifying
s2 + -3(s + 3) = 4

Reorder the terms:
s2 + -3(3 + s) = 4
s2 + (3 * -3 + s * -3) = 4
s2 + (-9 + -3s) = 4

Reorder the terms:
-9 + -3s + s2 = 4

Solving
-9 + -3s + s2 = 4

Solving for variable 's'.

Reorder the terms:
-9 + -4 + -3s + s2 = 4 + -4

Combine like terms: -9 + -4 = -13
-13 + -3s + s2 = 4 + -4

Combine like terms: 4 + -4 = 0
-13 + -3s + s2 = 0

Begin completing the square.

Move the constant term to the right:

Add '13' to each side of the equation.
-13 + -3s + 13 + s2 = 0 + 13

Reorder the terms:
-13 + 13 + -3s + s2 = 0 + 13

Combine like terms: -13 + 13 = 0
0 + -3s + s2 = 0 + 13
-3s + s2 = 0 + 13

Combine like terms: 0 + 13 = 13
-3s + s2 = 13

The s term is -3s.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3s + 2.25 + s2 = 13 + 2.25

Reorder the terms:
2.25 + -3s + s2 = 13 + 2.25

Combine like terms: 13 + 2.25 = 15.25
2.25 + -3s + s2 = 15.25

Factor a perfect square on the left side:
(s + -1.5)(s + -1.5) = 15.25

Calculate the square root of the right side: 3.905124838

Break this problem into two subproblems by setting 
(s + -1.5) equal to 3.905124838 and -3.905124838.

Subproblem 1

s + -1.5 = 3.905124838 Simplifying s + -1.5 = 3.905124838 Reorder the terms: -1.5 + s = 3.905124838 Solving -1.5 + s = 3.905124838 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + s = 3.905124838 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + s = 3.905124838 + 1.5 s = 3.905124838 + 1.5 Combine like terms: 3.905124838 + 1.5 = 5.405124838 s = 5.405124838 Simplifying s = 5.405124838

Subproblem 2

s + -1.5 = -3.905124838 Simplifying s + -1.5 = -3.905124838 Reorder the terms: -1.5 + s = -3.905124838 Solving -1.5 + s = -3.905124838 Solving for variable 's'. Move all terms containing s to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + s = -3.905124838 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + s = -3.905124838 + 1.5 s = -3.905124838 + 1.5 Combine like terms: -3.905124838 + 1.5 = -2.405124838 s = -2.405124838 Simplifying s = -2.405124838

Solution

The solution to the problem is based on the solutions from the subproblems. s = {5.405124838, -2.405124838}

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