2x^2-3x-24=0

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Solution for 2x^2-3x-24=0 equation:


Simplifying
2x2 + -3x + -24 = 0

Reorder the terms:
-24 + -3x + 2x2 = 0

Solving
-24 + -3x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-12 + -1.5x + x2 = 0

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + -1.5x + 12 + x2 = 0 + 12

Reorder the terms:
-12 + 12 + -1.5x + x2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + -1.5x + x2 = 0 + 12
-1.5x + x2 = 0 + 12

Combine like terms: 0 + 12 = 12
-1.5x + x2 = 12

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = 12 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = 12 + 0.5625

Combine like terms: 12 + 0.5625 = 12.5625
0.5625 + -1.5x + x2 = 12.5625

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = 12.5625

Calculate the square root of the right side: 3.54436172

Break this problem into two subproblems by setting 
(x + -0.75) equal to 3.54436172 and -3.54436172.

Subproblem 1

x + -0.75 = 3.54436172 Simplifying x + -0.75 = 3.54436172 Reorder the terms: -0.75 + x = 3.54436172 Solving -0.75 + x = 3.54436172 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 3.54436172 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 3.54436172 + 0.75 x = 3.54436172 + 0.75 Combine like terms: 3.54436172 + 0.75 = 4.29436172 x = 4.29436172 Simplifying x = 4.29436172

Subproblem 2

x + -0.75 = -3.54436172 Simplifying x + -0.75 = -3.54436172 Reorder the terms: -0.75 + x = -3.54436172 Solving -0.75 + x = -3.54436172 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -3.54436172 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -3.54436172 + 0.75 x = -3.54436172 + 0.75 Combine like terms: -3.54436172 + 0.75 = -2.79436172 x = -2.79436172 Simplifying x = -2.79436172

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.29436172, -2.79436172}

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