8q^2-4q^2=9q+24

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Solution for 8q^2-4q^2=9q+24 equation:


Simplifying
8q2 + -4q2 = 9q + 24

Combine like terms: 8q2 + -4q2 = 4q2
4q2 = 9q + 24

Reorder the terms:
4q2 = 24 + 9q

Solving
4q2 = 24 + 9q

Solving for variable 'q'.

Reorder the terms:
-24 + -9q + 4q2 = 24 + 9q + -24 + -9q

Reorder the terms:
-24 + -9q + 4q2 = 24 + -24 + 9q + -9q

Combine like terms: 24 + -24 = 0
-24 + -9q + 4q2 = 0 + 9q + -9q
-24 + -9q + 4q2 = 9q + -9q

Combine like terms: 9q + -9q = 0
-24 + -9q + 4q2 = 0

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

Divide each side by '4'.
-6 + -2.25q + q2 = 0

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + -2.25q + 6 + q2 = 0 + 6

Reorder the terms:
-6 + 6 + -2.25q + q2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -2.25q + q2 = 0 + 6
-2.25q + q2 = 0 + 6

Combine like terms: 0 + 6 = 6
-2.25q + q2 = 6

The q term is -2.25q.  Take half its coefficient (-1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
-2.25q + 1.265625 + q2 = 6 + 1.265625

Reorder the terms:
1.265625 + -2.25q + q2 = 6 + 1.265625

Combine like terms: 6 + 1.265625 = 7.265625
1.265625 + -2.25q + q2 = 7.265625

Factor a perfect square on the left side:
(q + -1.125)(q + -1.125) = 7.265625

Calculate the square root of the right side: 2.695482332

Break this problem into two subproblems by setting 
(q + -1.125) equal to 2.695482332 and -2.695482332.

Subproblem 1

q + -1.125 = 2.695482332 Simplifying q + -1.125 = 2.695482332 Reorder the terms: -1.125 + q = 2.695482332 Solving -1.125 + q = 2.695482332 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '1.125' to each side of the equation. -1.125 + 1.125 + q = 2.695482332 + 1.125 Combine like terms: -1.125 + 1.125 = 0.000 0.000 + q = 2.695482332 + 1.125 q = 2.695482332 + 1.125 Combine like terms: 2.695482332 + 1.125 = 3.820482332 q = 3.820482332 Simplifying q = 3.820482332

Subproblem 2

q + -1.125 = -2.695482332 Simplifying q + -1.125 = -2.695482332 Reorder the terms: -1.125 + q = -2.695482332 Solving -1.125 + q = -2.695482332 Solving for variable 'q'. Move all terms containing q to the left, all other terms to the right. Add '1.125' to each side of the equation. -1.125 + 1.125 + q = -2.695482332 + 1.125 Combine like terms: -1.125 + 1.125 = 0.000 0.000 + q = -2.695482332 + 1.125 q = -2.695482332 + 1.125 Combine like terms: -2.695482332 + 1.125 = -1.570482332 q = -1.570482332 Simplifying q = -1.570482332

Solution

The solution to the problem is based on the solutions from the subproblems. q = {3.820482332, -1.570482332}

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