2x^2+2x-98=0

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Solution for 2x^2+2x-98=0 equation:


Simplifying
2x2 + 2x + -98 = 0

Reorder the terms:
-98 + 2x + 2x2 = 0

Solving
-98 + 2x + 2x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-49 + x + x2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-49 + x + x2)' equal to zero and attempt to solve: Simplifying -49 + x + x2 = 0 Solving -49 + x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '49' to each side of the equation. -49 + x + 49 + x2 = 0 + 49 Reorder the terms: -49 + 49 + x + x2 = 0 + 49 Combine like terms: -49 + 49 = 0 0 + x + x2 = 0 + 49 x + x2 = 0 + 49 Combine like terms: 0 + 49 = 49 x + x2 = 49 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. x + 0.25 + x2 = 49 + 0.25 Reorder the terms: 0.25 + x + x2 = 49 + 0.25 Combine like terms: 49 + 0.25 = 49.25 0.25 + x + x2 = 49.25 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = 49.25 Calculate the square root of the right side: 7.017834424 Break this problem into two subproblems by setting (x + 0.5) equal to 7.017834424 and -7.017834424.

Subproblem 1

x + 0.5 = 7.017834424 Simplifying x + 0.5 = 7.017834424 Reorder the terms: 0.5 + x = 7.017834424 Solving 0.5 + x = 7.017834424 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 7.017834424 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 7.017834424 + -0.5 x = 7.017834424 + -0.5 Combine like terms: 7.017834424 + -0.5 = 6.517834424 x = 6.517834424 Simplifying x = 6.517834424

Subproblem 2

x + 0.5 = -7.017834424 Simplifying x + 0.5 = -7.017834424 Reorder the terms: 0.5 + x = -7.017834424 Solving 0.5 + x = -7.017834424 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -7.017834424 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -7.017834424 + -0.5 x = -7.017834424 + -0.5 Combine like terms: -7.017834424 + -0.5 = -7.517834424 x = -7.517834424 Simplifying x = -7.517834424

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.517834424, -7.517834424}

Solution

x = {6.517834424, -7.517834424}

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