4q^2-3q=3q^2-4q+18

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Solution for 4q^2-3q=3q^2-4q+18 equation:


Simplifying
4q2 + -3q = 3q2 + -4q + 18

Reorder the terms:
-3q + 4q2 = 3q2 + -4q + 18

Reorder the terms:
-3q + 4q2 = 18 + -4q + 3q2

Solving
-3q + 4q2 = 18 + -4q + 3q2

Solving for variable 'q'.

Reorder the terms:
-18 + -3q + 4q + 4q2 + -3q2 = 18 + -4q + 3q2 + -18 + 4q + -3q2

Combine like terms: -3q + 4q = 1q
-18 + 1q + 4q2 + -3q2 = 18 + -4q + 3q2 + -18 + 4q + -3q2

Combine like terms: 4q2 + -3q2 = 1q2
-18 + 1q + 1q2 = 18 + -4q + 3q2 + -18 + 4q + -3q2

Reorder the terms:
-18 + 1q + 1q2 = 18 + -18 + -4q + 4q + 3q2 + -3q2

Combine like terms: 18 + -18 = 0
-18 + 1q + 1q2 = 0 + -4q + 4q + 3q2 + -3q2
-18 + 1q + 1q2 = -4q + 4q + 3q2 + -3q2

Combine like terms: -4q + 4q = 0
-18 + 1q + 1q2 = 0 + 3q2 + -3q2
-18 + 1q + 1q2 = 3q2 + -3q2

Combine like terms: 3q2 + -3q2 = 0
-18 + 1q + 1q2 = 0

Begin completing the square.

Move the constant term to the right:

Add '18' to each side of the equation.
-18 + 1q + 18 + q2 = 0 + 18

Reorder the terms:
-18 + 18 + 1q + q2 = 0 + 18

Combine like terms: -18 + 18 = 0
0 + 1q + q2 = 0 + 18
1q + q2 = 0 + 18

Combine like terms: 0 + 18 = 18
1q + q2 = 18

The q term is 1q.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
q + 0.25 + q2 = 18 + 0.25

Reorder the terms:
0.25 + q + q2 = 18 + 0.25

Combine like terms: 18 + 0.25 = 18.25
0.25 + q + q2 = 18.25

Factor a perfect square on the left side:
(q + 0.5)(q + 0.5) = 18.25

Calculate the square root of the right side: 4.272001873

Break this problem into two subproblems by setting 
(q + 0.5) equal to 4.272001873 and -4.272001873.

Subproblem 1

q + 0.5 = 4.272001873 Simplifying q + 0.5 = 4.272001873 Reorder the terms: 0.5 + q = 4.272001873 Solving 0.5 + q = 4.272001873 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + q = 4.272001873 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + q = 4.272001873 + -0.5 q = 4.272001873 + -0.5 Combine like terms: 4.272001873 + -0.5 = 3.772001873 q = 3.772001873 Simplifying q = 3.772001873

Subproblem 2

q + 0.5 = -4.272001873 Simplifying q + 0.5 = -4.272001873 Reorder the terms: 0.5 + q = -4.272001873 Solving 0.5 + q = -4.272001873 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + q = -4.272001873 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + q = -4.272001873 + -0.5 q = -4.272001873 + -0.5 Combine like terms: -4.272001873 + -0.5 = -4.772001873 q = -4.772001873 Simplifying q = -4.772001873

Solution

The solution to the problem is based on the solutions from the subproblems. q = {3.772001873, -4.772001873}

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