(9x^2-5x-37)+(2x^2+9)=

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Solution for (9x^2-5x-37)+(2x^2+9)= equation:


Simplifying
(9x2 + -5x + -37) + (2x2 + 9) = 0

Reorder the terms:
(-37 + -5x + 9x2) + (2x2 + 9) = 0

Remove parenthesis around (-37 + -5x + 9x2)
-37 + -5x + 9x2 + (2x2 + 9) = 0

Reorder the terms:
-37 + -5x + 9x2 + (9 + 2x2) = 0

Remove parenthesis around (9 + 2x2)
-37 + -5x + 9x2 + 9 + 2x2 = 0

Reorder the terms:
-37 + 9 + -5x + 9x2 + 2x2 = 0

Combine like terms: -37 + 9 = -28
-28 + -5x + 9x2 + 2x2 = 0

Combine like terms: 9x2 + 2x2 = 11x2
-28 + -5x + 11x2 = 0

Solving
-28 + -5x + 11x2 = 0

Solving for variable 'x'.

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

Divide each side by '11'.
-2.545454545 + -0.4545454545x + x2 = 0

Move the constant term to the right:

Add '2.545454545' to each side of the equation.
-2.545454545 + -0.4545454545x + 2.545454545 + x2 = 0 + 2.545454545

Reorder the terms:
-2.545454545 + 2.545454545 + -0.4545454545x + x2 = 0 + 2.545454545

Combine like terms: -2.545454545 + 2.545454545 = 0.000000000
0.000000000 + -0.4545454545x + x2 = 0 + 2.545454545
-0.4545454545x + x2 = 0 + 2.545454545

Combine like terms: 0 + 2.545454545 = 2.545454545
-0.4545454545x + x2 = 2.545454545

The x term is -0.4545454545x.  Take half its coefficient (-0.2272727273).
Square it (0.05165289257) and add it to both sides.

Add '0.05165289257' to each side of the equation.
-0.4545454545x + 0.05165289257 + x2 = 2.545454545 + 0.05165289257

Reorder the terms:
0.05165289257 + -0.4545454545x + x2 = 2.545454545 + 0.05165289257

Combine like terms: 2.545454545 + 0.05165289257 = 2.59710743757
0.05165289257 + -0.4545454545x + x2 = 2.59710743757

Factor a perfect square on the left side:
(x + -0.2272727273)(x + -0.2272727273) = 2.59710743757

Calculate the square root of the right side: 1.611554355

Break this problem into two subproblems by setting 
(x + -0.2272727273) equal to 1.611554355 and -1.611554355.

Subproblem 1

x + -0.2272727273 = 1.611554355 Simplifying x + -0.2272727273 = 1.611554355 Reorder the terms: -0.2272727273 + x = 1.611554355 Solving -0.2272727273 + x = 1.611554355 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2272727273' to each side of the equation. -0.2272727273 + 0.2272727273 + x = 1.611554355 + 0.2272727273 Combine like terms: -0.2272727273 + 0.2272727273 = 0.0000000000 0.0000000000 + x = 1.611554355 + 0.2272727273 x = 1.611554355 + 0.2272727273 Combine like terms: 1.611554355 + 0.2272727273 = 1.8388270823 x = 1.8388270823 Simplifying x = 1.8388270823

Subproblem 2

x + -0.2272727273 = -1.611554355 Simplifying x + -0.2272727273 = -1.611554355 Reorder the terms: -0.2272727273 + x = -1.611554355 Solving -0.2272727273 + x = -1.611554355 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2272727273' to each side of the equation. -0.2272727273 + 0.2272727273 + x = -1.611554355 + 0.2272727273 Combine like terms: -0.2272727273 + 0.2272727273 = 0.0000000000 0.0000000000 + x = -1.611554355 + 0.2272727273 x = -1.611554355 + 0.2272727273 Combine like terms: -1.611554355 + 0.2272727273 = -1.3842816277 x = -1.3842816277 Simplifying x = -1.3842816277

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.8388270823, -1.3842816277}

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