0.5x^2+4x-10=x+2

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Solution for 0.5x^2+4x-10=x+2 equation:


Simplifying
0.5x2 + 4x + -10 = x + 2

Reorder the terms:
-10 + 4x + 0.5x2 = x + 2

Reorder the terms:
-10 + 4x + 0.5x2 = 2 + x

Solving
-10 + 4x + 0.5x2 = 2 + x

Solving for variable 'x'.

Reorder the terms:
-10 + -2 + 4x + -1x + 0.5x2 = 2 + x + -2 + -1x

Combine like terms: -10 + -2 = -12
-12 + 4x + -1x + 0.5x2 = 2 + x + -2 + -1x

Combine like terms: 4x + -1x = 3x
-12 + 3x + 0.5x2 = 2 + x + -2 + -1x

Reorder the terms:
-12 + 3x + 0.5x2 = 2 + -2 + x + -1x

Combine like terms: 2 + -2 = 0
-12 + 3x + 0.5x2 = 0 + x + -1x
-12 + 3x + 0.5x2 = x + -1x

Combine like terms: x + -1x = 0
-12 + 3x + 0.5x2 = 0

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

Divide each side by '0.5'.
-24 + 6x + x2 = 0

Move the constant term to the right:

Add '24' to each side of the equation.
-24 + 6x + 24 + x2 = 0 + 24

Reorder the terms:
-24 + 24 + 6x + x2 = 0 + 24

Combine like terms: -24 + 24 = 0
0 + 6x + x2 = 0 + 24
6x + x2 = 0 + 24

Combine like terms: 0 + 24 = 24
6x + x2 = 24

The x term is 6x.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6x + 9 + x2 = 24 + 9

Reorder the terms:
9 + 6x + x2 = 24 + 9

Combine like terms: 24 + 9 = 33
9 + 6x + x2 = 33

Factor a perfect square on the left side:
(x + 3)(x + 3) = 33

Calculate the square root of the right side: 5.744562647

Break this problem into two subproblems by setting 
(x + 3) equal to 5.744562647 and -5.744562647.

Subproblem 1

x + 3 = 5.744562647 Simplifying x + 3 = 5.744562647 Reorder the terms: 3 + x = 5.744562647 Solving 3 + x = 5.744562647 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 5.744562647 + -3 Combine like terms: 3 + -3 = 0 0 + x = 5.744562647 + -3 x = 5.744562647 + -3 Combine like terms: 5.744562647 + -3 = 2.744562647 x = 2.744562647 Simplifying x = 2.744562647

Subproblem 2

x + 3 = -5.744562647 Simplifying x + 3 = -5.744562647 Reorder the terms: 3 + x = -5.744562647 Solving 3 + x = -5.744562647 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -5.744562647 + -3 Combine like terms: 3 + -3 = 0 0 + x = -5.744562647 + -3 x = -5.744562647 + -3 Combine like terms: -5.744562647 + -3 = -8.744562647 x = -8.744562647 Simplifying x = -8.744562647

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.744562647, -8.744562647}

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