2x^2-35x-6.5=0

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Solution for 2x^2-35x-6.5=0 equation:


Simplifying
2x2 + -35x + -6.5 = 0

Reorder the terms:
-6.5 + -35x + 2x2 = 0

Solving
-6.5 + -35x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-3.25 + -17.5x + x2 = 0

Move the constant term to the right:

Add '3.25' to each side of the equation.
-3.25 + -17.5x + 3.25 + x2 = 0 + 3.25

Reorder the terms:
-3.25 + 3.25 + -17.5x + x2 = 0 + 3.25

Combine like terms: -3.25 + 3.25 = 0.00
0.00 + -17.5x + x2 = 0 + 3.25
-17.5x + x2 = 0 + 3.25

Combine like terms: 0 + 3.25 = 3.25
-17.5x + x2 = 3.25

The x term is -17.5x.  Take half its coefficient (-8.75).
Square it (76.5625) and add it to both sides.

Add '76.5625' to each side of the equation.
-17.5x + 76.5625 + x2 = 3.25 + 76.5625

Reorder the terms:
76.5625 + -17.5x + x2 = 3.25 + 76.5625

Combine like terms: 3.25 + 76.5625 = 79.8125
76.5625 + -17.5x + x2 = 79.8125

Factor a perfect square on the left side:
(x + -8.75)(x + -8.75) = 79.8125

Calculate the square root of the right side: 8.933784193

Break this problem into two subproblems by setting 
(x + -8.75) equal to 8.933784193 and -8.933784193.

Subproblem 1

x + -8.75 = 8.933784193 Simplifying x + -8.75 = 8.933784193 Reorder the terms: -8.75 + x = 8.933784193 Solving -8.75 + x = 8.933784193 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.75' to each side of the equation. -8.75 + 8.75 + x = 8.933784193 + 8.75 Combine like terms: -8.75 + 8.75 = 0.00 0.00 + x = 8.933784193 + 8.75 x = 8.933784193 + 8.75 Combine like terms: 8.933784193 + 8.75 = 17.683784193 x = 17.683784193 Simplifying x = 17.683784193

Subproblem 2

x + -8.75 = -8.933784193 Simplifying x + -8.75 = -8.933784193 Reorder the terms: -8.75 + x = -8.933784193 Solving -8.75 + x = -8.933784193 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.75' to each side of the equation. -8.75 + 8.75 + x = -8.933784193 + 8.75 Combine like terms: -8.75 + 8.75 = 0.00 0.00 + x = -8.933784193 + 8.75 x = -8.933784193 + 8.75 Combine like terms: -8.933784193 + 8.75 = -0.183784193 x = -0.183784193 Simplifying x = -0.183784193

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.683784193, -0.183784193}

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