2x^2-7x-50=0

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Solution for 2x^2-7x-50=0 equation:


Simplifying
2x2 + -7x + -50 = 0

Reorder the terms:
-50 + -7x + 2x2 = 0

Solving
-50 + -7x + 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'.
-25 + -3.5x + x2 = 0

Move the constant term to the right:

Add '25' to each side of the equation.
-25 + -3.5x + 25 + x2 = 0 + 25

Reorder the terms:
-25 + 25 + -3.5x + x2 = 0 + 25

Combine like terms: -25 + 25 = 0
0 + -3.5x + x2 = 0 + 25
-3.5x + x2 = 0 + 25

Combine like terms: 0 + 25 = 25
-3.5x + x2 = 25

The x term is -3.5x.  Take half its coefficient (-1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
-3.5x + 3.0625 + x2 = 25 + 3.0625

Reorder the terms:
3.0625 + -3.5x + x2 = 25 + 3.0625

Combine like terms: 25 + 3.0625 = 28.0625
3.0625 + -3.5x + x2 = 28.0625

Factor a perfect square on the left side:
(x + -1.75)(x + -1.75) = 28.0625

Calculate the square root of the right side: 5.297405025

Break this problem into two subproblems by setting 
(x + -1.75) equal to 5.297405025 and -5.297405025.

Subproblem 1

x + -1.75 = 5.297405025 Simplifying x + -1.75 = 5.297405025 Reorder the terms: -1.75 + x = 5.297405025 Solving -1.75 + x = 5.297405025 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = 5.297405025 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = 5.297405025 + 1.75 x = 5.297405025 + 1.75 Combine like terms: 5.297405025 + 1.75 = 7.047405025 x = 7.047405025 Simplifying x = 7.047405025

Subproblem 2

x + -1.75 = -5.297405025 Simplifying x + -1.75 = -5.297405025 Reorder the terms: -1.75 + x = -5.297405025 Solving -1.75 + x = -5.297405025 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = -5.297405025 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = -5.297405025 + 1.75 x = -5.297405025 + 1.75 Combine like terms: -5.297405025 + 1.75 = -3.547405025 x = -3.547405025 Simplifying x = -3.547405025

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.047405025, -3.547405025}

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