0.5x^2-x-24=0

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Solution for 0.5x^2-x-24=0 equation:


Simplifying
0.5x2 + -1x + -24 = 0

Reorder the terms:
-24 + -1x + 0.5x2 = 0

Solving
-24 + -1x + 0.5x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.5'.
-48 + -2x + x2 = 0

Move the constant term to the right:

Add '48' to each side of the equation.
-48 + -2x + 48 + x2 = 0 + 48

Reorder the terms:
-48 + 48 + -2x + x2 = 0 + 48

Combine like terms: -48 + 48 = 0
0 + -2x + x2 = 0 + 48
-2x + x2 = 0 + 48

Combine like terms: 0 + 48 = 48
-2x + x2 = 48

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 48 + 1

Reorder the terms:
1 + -2x + x2 = 48 + 1

Combine like terms: 48 + 1 = 49
1 + -2x + x2 = 49

Factor a perfect square on the left side:
(x + -1)(x + -1) = 49

Calculate the square root of the right side: 7

Break this problem into two subproblems by setting 
(x + -1) equal to 7 and -7.

Subproblem 1

x + -1 = 7 Simplifying x + -1 = 7 Reorder the terms: -1 + x = 7 Solving -1 + x = 7 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 7 + 1 Combine like terms: -1 + 1 = 0 0 + x = 7 + 1 x = 7 + 1 Combine like terms: 7 + 1 = 8 x = 8 Simplifying x = 8

Subproblem 2

x + -1 = -7 Simplifying x + -1 = -7 Reorder the terms: -1 + x = -7 Solving -1 + x = -7 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -7 + 1 Combine like terms: -1 + 1 = 0 0 + x = -7 + 1 x = -7 + 1 Combine like terms: -7 + 1 = -6 x = -6 Simplifying x = -6

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8, -6}

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