(27.821*x^2)+(139.25*x)+707=1300

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Solution for (27.821*x^2)+(139.25*x)+707=1300 equation:


Simplifying
(27.821x2) + (139.25x) + 707 = 1300

Reorder the terms:
707 + (139.25x) + (27.821x2) = 1300

Solving
707 + (139.25x) + (27.821x2) = 1300

Solving for variable 'x'.

Reorder the terms:
707 + -1300 + (139.25x) + (27.821x2) = 1300 + -1300

Combine like terms: 707 + -1300 = -593
-593 + (139.25x) + (27.821x2) = 1300 + -1300

Combine like terms: 1300 + -1300 = 0
-593 + (139.25x) + (27.821x2) = 0

Begin completing the square.  Divide all terms by
27.821 the coefficient of the squared term: 

Divide each side by '27.821'.
-21.31483412 + (5.00521189x) + x2 = 0

Move the constant term to the right:

Add '21.31483412' to each side of the equation.
-21.31483412 + (5.00521189x) + 21.31483412 + x2 = 0 + 21.31483412

Reorder the terms:
-21.31483412 + 21.31483412 + (5.00521189x) + x2 = 0 + 21.31483412

Combine like terms: -21.31483412 + 21.31483412 = 0.00000000
0.00000000 + (5.00521189x) + x2 = 0 + 21.31483412
(5.00521189x) + x2 = 0 + 21.31483412

Combine like terms: 0 + 21.31483412 = 21.31483412
(5.00521189x) + x2 = 21.31483412

The x term is (5.00521189x).  Take half its coefficient (2.502605945).
Square it (6.263036516) and add it to both sides.

Add '6.263036516' to each side of the equation.
(5.00521189x) + 6.263036516 + x2 = 21.31483412 + 6.263036516

Reorder the terms:
6.263036516 + (5.00521189x) + x2 = 21.31483412 + 6.263036516

Combine like terms: 21.31483412 + 6.263036516 = 27.577870636
6.263036516 + (5.00521189x) + x2 = 27.577870636

Factor a perfect square on the left side:
((x) + 2.502605945)((x) + 2.502605945) = 27.577870636

Calculate the square root of the right side: 5.251463666

Break this problem into two subproblems by setting 
((x) + 2.502605945) equal to 5.251463666 and -5.251463666.

Subproblem 1

(x) + 2.502605945 = 5.251463666 Simplifying (x) + 2.502605945 = 5.251463666 x + 2.502605945 = 5.251463666 Reorder the terms: 2.502605945 + x = 5.251463666 Solving 2.502605945 + x = 5.251463666 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.502605945' to each side of the equation. 2.502605945 + -2.502605945 + x = 5.251463666 + -2.502605945 Combine like terms: 2.502605945 + -2.502605945 = 0.000000000 0.000000000 + x = 5.251463666 + -2.502605945 x = 5.251463666 + -2.502605945 Combine like terms: 5.251463666 + -2.502605945 = 2.748857721 x = 2.748857721 Simplifying x = 2.748857721

Subproblem 2

(x) + 2.502605945 = -5.251463666 Simplifying (x) + 2.502605945 = -5.251463666 x + 2.502605945 = -5.251463666 Reorder the terms: 2.502605945 + x = -5.251463666 Solving 2.502605945 + x = -5.251463666 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.502605945' to each side of the equation. 2.502605945 + -2.502605945 + x = -5.251463666 + -2.502605945 Combine like terms: 2.502605945 + -2.502605945 = 0.000000000 0.000000000 + x = -5.251463666 + -2.502605945 x = -5.251463666 + -2.502605945 Combine like terms: -5.251463666 + -2.502605945 = -7.754069611 x = -7.754069611 Simplifying x = -7.754069611

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.748857721, -7.754069611}

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