8x^2+(-34)x-(-9)=

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Solution for 8x^2+(-34)x-(-9)= equation:


Simplifying
8x2 + (-34) * x + -1(-9) = 0

Multiply -1 * -9
8x2 + -34x + 9 = 0

Reorder the terms:
9 + -34x + 8x2 = 0

Solving
9 + -34x + 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'.
1.125 + -4.25x + x2 = 0

Move the constant term to the right:

Add '-1.125' to each side of the equation.
1.125 + -4.25x + -1.125 + x2 = 0 + -1.125

Reorder the terms:
1.125 + -1.125 + -4.25x + x2 = 0 + -1.125

Combine like terms: 1.125 + -1.125 = 0.000
0.000 + -4.25x + x2 = 0 + -1.125
-4.25x + x2 = 0 + -1.125

Combine like terms: 0 + -1.125 = -1.125
-4.25x + x2 = -1.125

The x term is -4.25x.  Take half its coefficient (-2.125).
Square it (4.515625) and add it to both sides.

Add '4.515625' to each side of the equation.
-4.25x + 4.515625 + x2 = -1.125 + 4.515625

Reorder the terms:
4.515625 + -4.25x + x2 = -1.125 + 4.515625

Combine like terms: -1.125 + 4.515625 = 3.390625
4.515625 + -4.25x + x2 = 3.390625

Factor a perfect square on the left side:
(x + -2.125)(x + -2.125) = 3.390625

Calculate the square root of the right side: 1.841364983

Break this problem into two subproblems by setting 
(x + -2.125) equal to 1.841364983 and -1.841364983.

Subproblem 1

x + -2.125 = 1.841364983 Simplifying x + -2.125 = 1.841364983 Reorder the terms: -2.125 + x = 1.841364983 Solving -2.125 + x = 1.841364983 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.125' to each side of the equation. -2.125 + 2.125 + x = 1.841364983 + 2.125 Combine like terms: -2.125 + 2.125 = 0.000 0.000 + x = 1.841364983 + 2.125 x = 1.841364983 + 2.125 Combine like terms: 1.841364983 + 2.125 = 3.966364983 x = 3.966364983 Simplifying x = 3.966364983

Subproblem 2

x + -2.125 = -1.841364983 Simplifying x + -2.125 = -1.841364983 Reorder the terms: -2.125 + x = -1.841364983 Solving -2.125 + x = -1.841364983 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.125' to each side of the equation. -2.125 + 2.125 + x = -1.841364983 + 2.125 Combine like terms: -2.125 + 2.125 = 0.000 0.000 + x = -1.841364983 + 2.125 x = -1.841364983 + 2.125 Combine like terms: -1.841364983 + 2.125 = 0.283635017 x = 0.283635017 Simplifying x = 0.283635017

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.966364983, 0.283635017}

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