2x^2+7x-570=0

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Solution for 2x^2+7x-570=0 equation:


Simplifying
2x2 + 7x + -570 = 0

Reorder the terms:
-570 + 7x + 2x2 = 0

Solving
-570 + 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'.
-285 + 3.5x + x2 = 0

Move the constant term to the right:

Add '285' to each side of the equation.
-285 + 3.5x + 285 + x2 = 0 + 285

Reorder the terms:
-285 + 285 + 3.5x + x2 = 0 + 285

Combine like terms: -285 + 285 = 0
0 + 3.5x + x2 = 0 + 285
3.5x + x2 = 0 + 285

Combine like terms: 0 + 285 = 285
3.5x + x2 = 285

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 = 285 + 3.0625

Reorder the terms:
3.0625 + 3.5x + x2 = 285 + 3.0625

Combine like terms: 285 + 3.0625 = 288.0625
3.0625 + 3.5x + x2 = 288.0625

Factor a perfect square on the left side:
(x + 1.75)(x + 1.75) = 288.0625

Calculate the square root of the right side: 16.972404072

Break this problem into two subproblems by setting 
(x + 1.75) equal to 16.972404072 and -16.972404072.

Subproblem 1

x + 1.75 = 16.972404072 Simplifying x + 1.75 = 16.972404072 Reorder the terms: 1.75 + x = 16.972404072 Solving 1.75 + x = 16.972404072 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 = 16.972404072 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = 16.972404072 + -1.75 x = 16.972404072 + -1.75 Combine like terms: 16.972404072 + -1.75 = 15.222404072 x = 15.222404072 Simplifying x = 15.222404072

Subproblem 2

x + 1.75 = -16.972404072 Simplifying x + 1.75 = -16.972404072 Reorder the terms: 1.75 + x = -16.972404072 Solving 1.75 + x = -16.972404072 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 = -16.972404072 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + x = -16.972404072 + -1.75 x = -16.972404072 + -1.75 Combine like terms: -16.972404072 + -1.75 = -18.722404072 x = -18.722404072 Simplifying x = -18.722404072

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.222404072, -18.722404072}

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