2x^2+45x-719=0

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Solution for 2x^2+45x-719=0 equation:


Simplifying
2x2 + 45x + -719 = 0

Reorder the terms:
-719 + 45x + 2x2 = 0

Solving
-719 + 45x + 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'.
-359.5 + 22.5x + x2 = 0

Move the constant term to the right:

Add '359.5' to each side of the equation.
-359.5 + 22.5x + 359.5 + x2 = 0 + 359.5

Reorder the terms:
-359.5 + 359.5 + 22.5x + x2 = 0 + 359.5

Combine like terms: -359.5 + 359.5 = 0.0
0.0 + 22.5x + x2 = 0 + 359.5
22.5x + x2 = 0 + 359.5

Combine like terms: 0 + 359.5 = 359.5
22.5x + x2 = 359.5

The x term is 22.5x.  Take half its coefficient (11.25).
Square it (126.5625) and add it to both sides.

Add '126.5625' to each side of the equation.
22.5x + 126.5625 + x2 = 359.5 + 126.5625

Reorder the terms:
126.5625 + 22.5x + x2 = 359.5 + 126.5625

Combine like terms: 359.5 + 126.5625 = 486.0625
126.5625 + 22.5x + x2 = 486.0625

Factor a perfect square on the left side:
(x + 11.25)(x + 11.25) = 486.0625

Calculate the square root of the right side: 22.046825168

Break this problem into two subproblems by setting 
(x + 11.25) equal to 22.046825168 and -22.046825168.

Subproblem 1

x + 11.25 = 22.046825168 Simplifying x + 11.25 = 22.046825168 Reorder the terms: 11.25 + x = 22.046825168 Solving 11.25 + x = 22.046825168 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11.25' to each side of the equation. 11.25 + -11.25 + x = 22.046825168 + -11.25 Combine like terms: 11.25 + -11.25 = 0.00 0.00 + x = 22.046825168 + -11.25 x = 22.046825168 + -11.25 Combine like terms: 22.046825168 + -11.25 = 10.796825168 x = 10.796825168 Simplifying x = 10.796825168

Subproblem 2

x + 11.25 = -22.046825168 Simplifying x + 11.25 = -22.046825168 Reorder the terms: 11.25 + x = -22.046825168 Solving 11.25 + x = -22.046825168 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-11.25' to each side of the equation. 11.25 + -11.25 + x = -22.046825168 + -11.25 Combine like terms: 11.25 + -11.25 = 0.00 0.00 + x = -22.046825168 + -11.25 x = -22.046825168 + -11.25 Combine like terms: -22.046825168 + -11.25 = -33.296825168 x = -33.296825168 Simplifying x = -33.296825168

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.796825168, -33.296825168}

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