2x^2-17x-3=180

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Solution for 2x^2-17x-3=180 equation:


Simplifying
2x2 + -17x + -3 = 180

Reorder the terms:
-3 + -17x + 2x2 = 180

Solving
-3 + -17x + 2x2 = 180

Solving for variable 'x'.

Reorder the terms:
-3 + -180 + -17x + 2x2 = 180 + -180

Combine like terms: -3 + -180 = -183
-183 + -17x + 2x2 = 180 + -180

Combine like terms: 180 + -180 = 0
-183 + -17x + 2x2 = 0

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

Divide each side by '2'.
-91.5 + -8.5x + x2 = 0

Move the constant term to the right:

Add '91.5' to each side of the equation.
-91.5 + -8.5x + 91.5 + x2 = 0 + 91.5

Reorder the terms:
-91.5 + 91.5 + -8.5x + x2 = 0 + 91.5

Combine like terms: -91.5 + 91.5 = 0.0
0.0 + -8.5x + x2 = 0 + 91.5
-8.5x + x2 = 0 + 91.5

Combine like terms: 0 + 91.5 = 91.5
-8.5x + x2 = 91.5

The x term is -8.5x.  Take half its coefficient (-4.25).
Square it (18.0625) and add it to both sides.

Add '18.0625' to each side of the equation.
-8.5x + 18.0625 + x2 = 91.5 + 18.0625

Reorder the terms:
18.0625 + -8.5x + x2 = 91.5 + 18.0625

Combine like terms: 91.5 + 18.0625 = 109.5625
18.0625 + -8.5x + x2 = 109.5625

Factor a perfect square on the left side:
(x + -4.25)(x + -4.25) = 109.5625

Calculate the square root of the right side: 10.467210708

Break this problem into two subproblems by setting 
(x + -4.25) equal to 10.467210708 and -10.467210708.

Subproblem 1

x + -4.25 = 10.467210708 Simplifying x + -4.25 = 10.467210708 Reorder the terms: -4.25 + x = 10.467210708 Solving -4.25 + x = 10.467210708 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.25' to each side of the equation. -4.25 + 4.25 + x = 10.467210708 + 4.25 Combine like terms: -4.25 + 4.25 = 0.00 0.00 + x = 10.467210708 + 4.25 x = 10.467210708 + 4.25 Combine like terms: 10.467210708 + 4.25 = 14.717210708 x = 14.717210708 Simplifying x = 14.717210708

Subproblem 2

x + -4.25 = -10.467210708 Simplifying x + -4.25 = -10.467210708 Reorder the terms: -4.25 + x = -10.467210708 Solving -4.25 + x = -10.467210708 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.25' to each side of the equation. -4.25 + 4.25 + x = -10.467210708 + 4.25 Combine like terms: -4.25 + 4.25 = 0.00 0.00 + x = -10.467210708 + 4.25 x = -10.467210708 + 4.25 Combine like terms: -10.467210708 + 4.25 = -6.217210708 x = -6.217210708 Simplifying x = -6.217210708

Solution

The solution to the problem is based on the solutions from the subproblems. x = {14.717210708, -6.217210708}

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