.5x^2+6x+10.5=2

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Solution for .5x^2+6x+10.5=2 equation:


Simplifying
0.5x2 + 6x + 10.5 = 2

Reorder the terms:
10.5 + 6x + 0.5x2 = 2

Solving
10.5 + 6x + 0.5x2 = 2

Solving for variable 'x'.

Reorder the terms:
10.5 + -2 + 6x + 0.5x2 = 2 + -2

Combine like terms: 10.5 + -2 = 8.5
8.5 + 6x + 0.5x2 = 2 + -2

Combine like terms: 2 + -2 = 0
8.5 + 6x + 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'.
17 + 12x + x2 = 0

Move the constant term to the right:

Add '-17' to each side of the equation.
17 + 12x + -17 + x2 = 0 + -17

Reorder the terms:
17 + -17 + 12x + x2 = 0 + -17

Combine like terms: 17 + -17 = 0
0 + 12x + x2 = 0 + -17
12x + x2 = 0 + -17

Combine like terms: 0 + -17 = -17
12x + x2 = -17

The x term is 12x.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12x + 36 + x2 = -17 + 36

Reorder the terms:
36 + 12x + x2 = -17 + 36

Combine like terms: -17 + 36 = 19
36 + 12x + x2 = 19

Factor a perfect square on the left side:
(x + 6)(x + 6) = 19

Calculate the square root of the right side: 4.358898944

Break this problem into two subproblems by setting 
(x + 6) equal to 4.358898944 and -4.358898944.

Subproblem 1

x + 6 = 4.358898944 Simplifying x + 6 = 4.358898944 Reorder the terms: 6 + x = 4.358898944 Solving 6 + x = 4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 4.358898944 + -6 Combine like terms: 6 + -6 = 0 0 + x = 4.358898944 + -6 x = 4.358898944 + -6 Combine like terms: 4.358898944 + -6 = -1.641101056 x = -1.641101056 Simplifying x = -1.641101056

Subproblem 2

x + 6 = -4.358898944 Simplifying x + 6 = -4.358898944 Reorder the terms: 6 + x = -4.358898944 Solving 6 + x = -4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -4.358898944 + -6 Combine like terms: 6 + -6 = 0 0 + x = -4.358898944 + -6 x = -4.358898944 + -6 Combine like terms: -4.358898944 + -6 = -10.358898944 x = -10.358898944 Simplifying x = -10.358898944

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.641101056, -10.358898944}

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