0=3.25x^2-9.75x-25.43

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Solution for 0=3.25x^2-9.75x-25.43 equation:


Simplifying
0 = 3.25x2 + -9.75x + -25.43

Reorder the terms:
0 = -25.43 + -9.75x + 3.25x2

Solving
0 = -25.43 + -9.75x + 3.25x2

Solving for variable 'x'.

Combine like terms: 0 + 25.43 = 25.43
25.43 + 9.75x + -3.25x2 = -25.43 + -9.75x + 3.25x2 + 25.43 + 9.75x + -3.25x2

Reorder the terms:
25.43 + 9.75x + -3.25x2 = -25.43 + 25.43 + -9.75x + 9.75x + 3.25x2 + -3.25x2

Combine like terms: -25.43 + 25.43 = 0.00
25.43 + 9.75x + -3.25x2 = 0.00 + -9.75x + 9.75x + 3.25x2 + -3.25x2
25.43 + 9.75x + -3.25x2 = -9.75x + 9.75x + 3.25x2 + -3.25x2

Combine like terms: -9.75x + 9.75x = 0.00
25.43 + 9.75x + -3.25x2 = 0.00 + 3.25x2 + -3.25x2
25.43 + 9.75x + -3.25x2 = 3.25x2 + -3.25x2

Combine like terms: 3.25x2 + -3.25x2 = 0.00
25.43 + 9.75x + -3.25x2 = 0.00

Begin completing the square.  Divide all terms by
-3.25 the coefficient of the squared term: 

Divide each side by '-3.25'.
-7.824615385 + -3x + x2 = 0

Move the constant term to the right:

Add '7.824615385' to each side of the equation.
-7.824615385 + -3x + 7.824615385 + x2 = 0 + 7.824615385

Reorder the terms:
-7.824615385 + 7.824615385 + -3x + x2 = 0 + 7.824615385

Combine like terms: -7.824615385 + 7.824615385 = 0.000000000
0.000000000 + -3x + x2 = 0 + 7.824615385
-3x + x2 = 0 + 7.824615385

Combine like terms: 0 + 7.824615385 = 7.824615385
-3x + x2 = 7.824615385

The x term is -3x.  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.
-3x + 2.25 + x2 = 7.824615385 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 7.824615385 + 2.25

Combine like terms: 7.824615385 + 2.25 = 10.074615385
2.25 + -3x + x2 = 10.074615385

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 10.074615385

Calculate the square root of the right side: 3.174053463

Break this problem into two subproblems by setting 
(x + -1.5) equal to 3.174053463 and -3.174053463.

Subproblem 1

x + -1.5 = 3.174053463 Simplifying x + -1.5 = 3.174053463 Reorder the terms: -1.5 + x = 3.174053463 Solving -1.5 + x = 3.174053463 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 3.174053463 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 3.174053463 + 1.5 x = 3.174053463 + 1.5 Combine like terms: 3.174053463 + 1.5 = 4.674053463 x = 4.674053463 Simplifying x = 4.674053463

Subproblem 2

x + -1.5 = -3.174053463 Simplifying x + -1.5 = -3.174053463 Reorder the terms: -1.5 + x = -3.174053463 Solving -1.5 + x = -3.174053463 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -3.174053463 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -3.174053463 + 1.5 x = -3.174053463 + 1.5 Combine like terms: -3.174053463 + 1.5 = -1.674053463 x = -1.674053463 Simplifying x = -1.674053463

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.674053463, -1.674053463}

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