2x^2+16x+32=17

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Solution for 2x^2+16x+32=17 equation:


Simplifying
2x2 + 16x + 32 = 17

Reorder the terms:
32 + 16x + 2x2 = 17

Solving
32 + 16x + 2x2 = 17

Solving for variable 'x'.

Reorder the terms:
32 + -17 + 16x + 2x2 = 17 + -17

Combine like terms: 32 + -17 = 15
15 + 16x + 2x2 = 17 + -17

Combine like terms: 17 + -17 = 0
15 + 16x + 2x2 = 0

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

Divide each side by '2'.
7.5 + 8x + x2 = 0

Move the constant term to the right:

Add '-7.5' to each side of the equation.
7.5 + 8x + -7.5 + x2 = 0 + -7.5

Reorder the terms:
7.5 + -7.5 + 8x + x2 = 0 + -7.5

Combine like terms: 7.5 + -7.5 = 0.0
0.0 + 8x + x2 = 0 + -7.5
8x + x2 = 0 + -7.5

Combine like terms: 0 + -7.5 = -7.5
8x + x2 = -7.5

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = -7.5 + 16

Reorder the terms:
16 + 8x + x2 = -7.5 + 16

Combine like terms: -7.5 + 16 = 8.5
16 + 8x + x2 = 8.5

Factor a perfect square on the left side:
(x + 4)(x + 4) = 8.5

Calculate the square root of the right side: 2.915475947

Break this problem into two subproblems by setting 
(x + 4) equal to 2.915475947 and -2.915475947.

Subproblem 1

x + 4 = 2.915475947 Simplifying x + 4 = 2.915475947 Reorder the terms: 4 + x = 2.915475947 Solving 4 + x = 2.915475947 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 2.915475947 + -4 Combine like terms: 4 + -4 = 0 0 + x = 2.915475947 + -4 x = 2.915475947 + -4 Combine like terms: 2.915475947 + -4 = -1.084524053 x = -1.084524053 Simplifying x = -1.084524053

Subproblem 2

x + 4 = -2.915475947 Simplifying x + 4 = -2.915475947 Reorder the terms: 4 + x = -2.915475947 Solving 4 + x = -2.915475947 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -2.915475947 + -4 Combine like terms: 4 + -4 = 0 0 + x = -2.915475947 + -4 x = -2.915475947 + -4 Combine like terms: -2.915475947 + -4 = -6.915475947 x = -6.915475947 Simplifying x = -6.915475947

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.084524053, -6.915475947}

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