-.02x^2+33x-4200=0

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Solution for -.02x^2+33x-4200=0 equation:


Simplifying
-0.02x2 + 33x + -4200 = 0

Reorder the terms:
-4200 + 33x + -0.02x2 = 0

Solving
-4200 + 33x + -0.02x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.02 the coefficient of the squared term: 

Divide each side by '-0.02'.
210000 + -1650x + x2 = 0

Move the constant term to the right:

Add '-210000' to each side of the equation.
210000 + -1650x + -210000 + x2 = 0 + -210000

Reorder the terms:
210000 + -210000 + -1650x + x2 = 0 + -210000

Combine like terms: 210000 + -210000 = 0
0 + -1650x + x2 = 0 + -210000
-1650x + x2 = 0 + -210000

Combine like terms: 0 + -210000 = -210000
-1650x + x2 = -210000

The x term is -1650x.  Take half its coefficient (-825).
Square it (680625) and add it to both sides.

Add '680625' to each side of the equation.
-1650x + 680625 + x2 = -210000 + 680625

Reorder the terms:
680625 + -1650x + x2 = -210000 + 680625

Combine like terms: -210000 + 680625 = 470625
680625 + -1650x + x2 = 470625

Factor a perfect square on the left side:
(x + -825)(x + -825) = 470625

Calculate the square root of the right side: 686.021136701

Break this problem into two subproblems by setting 
(x + -825) equal to 686.021136701 and -686.021136701.

Subproblem 1

x + -825 = 686.021136701 Simplifying x + -825 = 686.021136701 Reorder the terms: -825 + x = 686.021136701 Solving -825 + x = 686.021136701 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '825' to each side of the equation. -825 + 825 + x = 686.021136701 + 825 Combine like terms: -825 + 825 = 0 0 + x = 686.021136701 + 825 x = 686.021136701 + 825 Combine like terms: 686.021136701 + 825 = 1511.021136701 x = 1511.021136701 Simplifying x = 1511.021136701

Subproblem 2

x + -825 = -686.021136701 Simplifying x + -825 = -686.021136701 Reorder the terms: -825 + x = -686.021136701 Solving -825 + x = -686.021136701 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '825' to each side of the equation. -825 + 825 + x = -686.021136701 + 825 Combine like terms: -825 + 825 = 0 0 + x = -686.021136701 + 825 x = -686.021136701 + 825 Combine like terms: -686.021136701 + 825 = 138.978863299 x = 138.978863299 Simplifying x = 138.978863299

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1511.021136701, 138.978863299}

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