2x^2-3x-196=0

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Solution for 2x^2-3x-196=0 equation:


Simplifying
2x2 + -3x + -196 = 0

Reorder the terms:
-196 + -3x + 2x2 = 0

Solving
-196 + -3x + 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'.
-98 + -1.5x + x2 = 0

Move the constant term to the right:

Add '98' to each side of the equation.
-98 + -1.5x + 98 + x2 = 0 + 98

Reorder the terms:
-98 + 98 + -1.5x + x2 = 0 + 98

Combine like terms: -98 + 98 = 0
0 + -1.5x + x2 = 0 + 98
-1.5x + x2 = 0 + 98

Combine like terms: 0 + 98 = 98
-1.5x + x2 = 98

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = 98 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = 98 + 0.5625

Combine like terms: 98 + 0.5625 = 98.5625
0.5625 + -1.5x + x2 = 98.5625

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = 98.5625

Calculate the square root of the right side: 9.927864826

Break this problem into two subproblems by setting 
(x + -0.75) equal to 9.927864826 and -9.927864826.

Subproblem 1

x + -0.75 = 9.927864826 Simplifying x + -0.75 = 9.927864826 Reorder the terms: -0.75 + x = 9.927864826 Solving -0.75 + x = 9.927864826 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 9.927864826 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 9.927864826 + 0.75 x = 9.927864826 + 0.75 Combine like terms: 9.927864826 + 0.75 = 10.677864826 x = 10.677864826 Simplifying x = 10.677864826

Subproblem 2

x + -0.75 = -9.927864826 Simplifying x + -0.75 = -9.927864826 Reorder the terms: -0.75 + x = -9.927864826 Solving -0.75 + x = -9.927864826 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -9.927864826 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -9.927864826 + 0.75 x = -9.927864826 + 0.75 Combine like terms: -9.927864826 + 0.75 = -9.177864826 x = -9.177864826 Simplifying x = -9.177864826

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.677864826, -9.177864826}

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