2q^2+5q=-3q+3

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Solution for 2q^2+5q=-3q+3 equation:


Simplifying
2q2 + 5q = -3q + 3

Reorder the terms:
5q + 2q2 = -3q + 3

Reorder the terms:
5q + 2q2 = 3 + -3q

Solving
5q + 2q2 = 3 + -3q

Solving for variable 'q'.

Reorder the terms:
-3 + 5q + 3q + 2q2 = 3 + -3q + -3 + 3q

Combine like terms: 5q + 3q = 8q
-3 + 8q + 2q2 = 3 + -3q + -3 + 3q

Reorder the terms:
-3 + 8q + 2q2 = 3 + -3 + -3q + 3q

Combine like terms: 3 + -3 = 0
-3 + 8q + 2q2 = 0 + -3q + 3q
-3 + 8q + 2q2 = -3q + 3q

Combine like terms: -3q + 3q = 0
-3 + 8q + 2q2 = 0

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

Divide each side by '2'.
-1.5 + 4q + q2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + 4q + 1.5 + q2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + 4q + q2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + 4q + q2 = 0 + 1.5
4q + q2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
4q + q2 = 1.5

The q term is 4q.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4q + 4 + q2 = 1.5 + 4

Reorder the terms:
4 + 4q + q2 = 1.5 + 4

Combine like terms: 1.5 + 4 = 5.5
4 + 4q + q2 = 5.5

Factor a perfect square on the left side:
(q + 2)(q + 2) = 5.5

Calculate the square root of the right side: 2.34520788

Break this problem into two subproblems by setting 
(q + 2) equal to 2.34520788 and -2.34520788.

Subproblem 1

q + 2 = 2.34520788 Simplifying q + 2 = 2.34520788 Reorder the terms: 2 + q = 2.34520788 Solving 2 + q = 2.34520788 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + q = 2.34520788 + -2 Combine like terms: 2 + -2 = 0 0 + q = 2.34520788 + -2 q = 2.34520788 + -2 Combine like terms: 2.34520788 + -2 = 0.34520788 q = 0.34520788 Simplifying q = 0.34520788

Subproblem 2

q + 2 = -2.34520788 Simplifying q + 2 = -2.34520788 Reorder the terms: 2 + q = -2.34520788 Solving 2 + q = -2.34520788 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + q = -2.34520788 + -2 Combine like terms: 2 + -2 = 0 0 + q = -2.34520788 + -2 q = -2.34520788 + -2 Combine like terms: -2.34520788 + -2 = -4.34520788 q = -4.34520788 Simplifying q = -4.34520788

Solution

The solution to the problem is based on the solutions from the subproblems. q = {0.34520788, -4.34520788}

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