.5x^2+2x-48=0

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Solution for .5x^2+2x-48=0 equation:


Simplifying
0.5x2 + 2x + -48 = 0

Reorder the terms:
-48 + 2x + 0.5x2 = 0

Solving
-48 + 2x + 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'.
-96 + 4x + x2 = 0

Move the constant term to the right:

Add '96' to each side of the equation.
-96 + 4x + 96 + x2 = 0 + 96

Reorder the terms:
-96 + 96 + 4x + x2 = 0 + 96

Combine like terms: -96 + 96 = 0
0 + 4x + x2 = 0 + 96
4x + x2 = 0 + 96

Combine like terms: 0 + 96 = 96
4x + x2 = 96

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = 96 + 4

Reorder the terms:
4 + 4x + x2 = 96 + 4

Combine like terms: 96 + 4 = 100
4 + 4x + x2 = 100

Factor a perfect square on the left side:
(x + 2)(x + 2) = 100

Calculate the square root of the right side: 10

Break this problem into two subproblems by setting 
(x + 2) equal to 10 and -10.

Subproblem 1

x + 2 = 10 Simplifying x + 2 = 10 Reorder the terms: 2 + x = 10 Solving 2 + x = 10 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 10 + -2 Combine like terms: 2 + -2 = 0 0 + x = 10 + -2 x = 10 + -2 Combine like terms: 10 + -2 = 8 x = 8 Simplifying x = 8

Subproblem 2

x + 2 = -10 Simplifying x + 2 = -10 Reorder the terms: 2 + x = -10 Solving 2 + x = -10 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -10 + -2 Combine like terms: 2 + -2 = 0 0 + x = -10 + -2 x = -10 + -2 Combine like terms: -10 + -2 = -12 x = -12 Simplifying x = -12

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8, -12}

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