8x^2+17x-176=0

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Solution for 8x^2+17x-176=0 equation:


Simplifying
8x2 + 17x + -176 = 0

Reorder the terms:
-176 + 17x + 8x2 = 0

Solving
-176 + 17x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
-22 + 2.125x + x2 = 0

Move the constant term to the right:

Add '22' to each side of the equation.
-22 + 2.125x + 22 + x2 = 0 + 22

Reorder the terms:
-22 + 22 + 2.125x + x2 = 0 + 22

Combine like terms: -22 + 22 = 0
0 + 2.125x + x2 = 0 + 22
2.125x + x2 = 0 + 22

Combine like terms: 0 + 22 = 22
2.125x + x2 = 22

The x term is 2.125x.  Take half its coefficient (1.0625).
Square it (1.12890625) and add it to both sides.

Add '1.12890625' to each side of the equation.
2.125x + 1.12890625 + x2 = 22 + 1.12890625

Reorder the terms:
1.12890625 + 2.125x + x2 = 22 + 1.12890625

Combine like terms: 22 + 1.12890625 = 23.12890625
1.12890625 + 2.125x + x2 = 23.12890625

Factor a perfect square on the left side:
(x + 1.0625)(x + 1.0625) = 23.12890625

Calculate the square root of the right side: 4.809252151

Break this problem into two subproblems by setting 
(x + 1.0625) equal to 4.809252151 and -4.809252151.

Subproblem 1

x + 1.0625 = 4.809252151 Simplifying x + 1.0625 = 4.809252151 Reorder the terms: 1.0625 + x = 4.809252151 Solving 1.0625 + x = 4.809252151 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.0625' to each side of the equation. 1.0625 + -1.0625 + x = 4.809252151 + -1.0625 Combine like terms: 1.0625 + -1.0625 = 0.0000 0.0000 + x = 4.809252151 + -1.0625 x = 4.809252151 + -1.0625 Combine like terms: 4.809252151 + -1.0625 = 3.746752151 x = 3.746752151 Simplifying x = 3.746752151

Subproblem 2

x + 1.0625 = -4.809252151 Simplifying x + 1.0625 = -4.809252151 Reorder the terms: 1.0625 + x = -4.809252151 Solving 1.0625 + x = -4.809252151 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.0625' to each side of the equation. 1.0625 + -1.0625 + x = -4.809252151 + -1.0625 Combine like terms: 1.0625 + -1.0625 = 0.0000 0.0000 + x = -4.809252151 + -1.0625 x = -4.809252151 + -1.0625 Combine like terms: -4.809252151 + -1.0625 = -5.871752151 x = -5.871752151 Simplifying x = -5.871752151

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.746752151, -5.871752151}

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