4q^2-9q+3=0

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Solution for 4q^2-9q+3=0 equation:


Simplifying
4q2 + -9q + 3 = 0

Reorder the terms:
3 + -9q + 4q2 = 0

Solving
3 + -9q + 4q2 = 0

Solving for variable 'q'.

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

Divide each side by '4'.
0.75 + -2.25q + q2 = 0

Move the constant term to the right:

Add '-0.75' to each side of the equation.
0.75 + -2.25q + -0.75 + q2 = 0 + -0.75

Reorder the terms:
0.75 + -0.75 + -2.25q + q2 = 0 + -0.75

Combine like terms: 0.75 + -0.75 = 0.00
0.00 + -2.25q + q2 = 0 + -0.75
-2.25q + q2 = 0 + -0.75

Combine like terms: 0 + -0.75 = -0.75
-2.25q + q2 = -0.75

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 = -0.75 + 1.265625

Reorder the terms:
1.265625 + -2.25q + q2 = -0.75 + 1.265625

Combine like terms: -0.75 + 1.265625 = 0.515625
1.265625 + -2.25q + q2 = 0.515625

Factor a perfect square on the left side:
(q + -1.125)(q + -1.125) = 0.515625

Calculate the square root of the right side: 0.718070331

Break this problem into two subproblems by setting 
(q + -1.125) equal to 0.718070331 and -0.718070331.

Subproblem 1

q + -1.125 = 0.718070331 Simplifying q + -1.125 = 0.718070331 Reorder the terms: -1.125 + q = 0.718070331 Solving -1.125 + q = 0.718070331 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 = 0.718070331 + 1.125 Combine like terms: -1.125 + 1.125 = 0.000 0.000 + q = 0.718070331 + 1.125 q = 0.718070331 + 1.125 Combine like terms: 0.718070331 + 1.125 = 1.843070331 q = 1.843070331 Simplifying q = 1.843070331

Subproblem 2

q + -1.125 = -0.718070331 Simplifying q + -1.125 = -0.718070331 Reorder the terms: -1.125 + q = -0.718070331 Solving -1.125 + q = -0.718070331 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 = -0.718070331 + 1.125 Combine like terms: -1.125 + 1.125 = 0.000 0.000 + q = -0.718070331 + 1.125 q = -0.718070331 + 1.125 Combine like terms: -0.718070331 + 1.125 = 0.406929669 q = 0.406929669 Simplifying q = 0.406929669

Solution

The solution to the problem is based on the solutions from the subproblems. q = {1.843070331, 0.406929669}

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