600=.90x^2-26.5x+290

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Solution for 600=.90x^2-26.5x+290 equation:


Simplifying
600 = 0.90x2 + -26.5x + 290

Reorder the terms:
600 = 290 + -26.5x + 0.90x2

Solving
600 = 290 + -26.5x + 0.90x2

Solving for variable 'x'.

Combine like terms: 600 + -290 = 310
310 + 26.5x + -0.90x2 = 290 + -26.5x + 0.90x2 + -290 + 26.5x + -0.90x2

Reorder the terms:
310 + 26.5x + -0.90x2 = 290 + -290 + -26.5x + 26.5x + 0.90x2 + -0.90x2

Combine like terms: 290 + -290 = 0
310 + 26.5x + -0.90x2 = 0 + -26.5x + 26.5x + 0.90x2 + -0.90x2
310 + 26.5x + -0.90x2 = -26.5x + 26.5x + 0.90x2 + -0.90x2

Combine like terms: -26.5x + 26.5x = 0.0
310 + 26.5x + -0.90x2 = 0.0 + 0.90x2 + -0.90x2
310 + 26.5x + -0.90x2 = 0.90x2 + -0.90x2

Combine like terms: 0.90x2 + -0.90x2 = 0.00
310 + 26.5x + -0.90x2 = 0.00

Begin completing the square.  Divide all terms by
-0.90 the coefficient of the squared term: 

Divide each side by '-0.90'.
-344.4444444 + -29.44444444x + x2 = 0

Move the constant term to the right:

Add '344.4444444' to each side of the equation.
-344.4444444 + -29.44444444x + 344.4444444 + x2 = 0 + 344.4444444

Reorder the terms:
-344.4444444 + 344.4444444 + -29.44444444x + x2 = 0 + 344.4444444

Combine like terms: -344.4444444 + 344.4444444 = 0.0000000
0.0000000 + -29.44444444x + x2 = 0 + 344.4444444
-29.44444444x + x2 = 0 + 344.4444444

Combine like terms: 0 + 344.4444444 = 344.4444444
-29.44444444x + x2 = 344.4444444

The x term is -29.44444444x.  Take half its coefficient (-14.72222222).
Square it (216.7438271) and add it to both sides.

Add '216.7438271' to each side of the equation.
-29.44444444x + 216.7438271 + x2 = 344.4444444 + 216.7438271

Reorder the terms:
216.7438271 + -29.44444444x + x2 = 344.4444444 + 216.7438271

Combine like terms: 344.4444444 + 216.7438271 = 561.1882715
216.7438271 + -29.44444444x + x2 = 561.1882715

Factor a perfect square on the left side:
(x + -14.72222222)(x + -14.72222222) = 561.1882715

Calculate the square root of the right side: 23.689412646

Break this problem into two subproblems by setting 
(x + -14.72222222) equal to 23.689412646 and -23.689412646.

Subproblem 1

x + -14.72222222 = 23.689412646 Simplifying x + -14.72222222 = 23.689412646 Reorder the terms: -14.72222222 + x = 23.689412646 Solving -14.72222222 + x = 23.689412646 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14.72222222' to each side of the equation. -14.72222222 + 14.72222222 + x = 23.689412646 + 14.72222222 Combine like terms: -14.72222222 + 14.72222222 = 0.00000000 0.00000000 + x = 23.689412646 + 14.72222222 x = 23.689412646 + 14.72222222 Combine like terms: 23.689412646 + 14.72222222 = 38.411634866 x = 38.411634866 Simplifying x = 38.411634866

Subproblem 2

x + -14.72222222 = -23.689412646 Simplifying x + -14.72222222 = -23.689412646 Reorder the terms: -14.72222222 + x = -23.689412646 Solving -14.72222222 + x = -23.689412646 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '14.72222222' to each side of the equation. -14.72222222 + 14.72222222 + x = -23.689412646 + 14.72222222 Combine like terms: -14.72222222 + 14.72222222 = 0.00000000 0.00000000 + x = -23.689412646 + 14.72222222 x = -23.689412646 + 14.72222222 Combine like terms: -23.689412646 + 14.72222222 = -8.967190426 x = -8.967190426 Simplifying x = -8.967190426

Solution

The solution to the problem is based on the solutions from the subproblems. x = {38.411634866, -8.967190426}

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