0.03x^2-33x=7800

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Solution for 0.03x^2-33x=7800 equation:


Simplifying
0.03x2 + -33x = 7800

Reorder the terms:
-33x + 0.03x2 = 7800

Solving
-33x + 0.03x2 = 7800

Solving for variable 'x'.

Reorder the terms:
-7800 + -33x + 0.03x2 = 7800 + -7800

Combine like terms: 7800 + -7800 = 0
-7800 + -33x + 0.03x2 = 0

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

Divide each side by '0.03'.
-260000 + -1100x + x2 = 0

Move the constant term to the right:

Add '260000' to each side of the equation.
-260000 + -1100x + 260000 + x2 = 0 + 260000

Reorder the terms:
-260000 + 260000 + -1100x + x2 = 0 + 260000

Combine like terms: -260000 + 260000 = 0
0 + -1100x + x2 = 0 + 260000
-1100x + x2 = 0 + 260000

Combine like terms: 0 + 260000 = 260000
-1100x + x2 = 260000

The x term is -1100x.  Take half its coefficient (-550).
Square it (302500) and add it to both sides.

Add '302500' to each side of the equation.
-1100x + 302500 + x2 = 260000 + 302500

Reorder the terms:
302500 + -1100x + x2 = 260000 + 302500

Combine like terms: 260000 + 302500 = 562500
302500 + -1100x + x2 = 562500

Factor a perfect square on the left side:
(x + -550)(x + -550) = 562500

Calculate the square root of the right side: 750

Break this problem into two subproblems by setting 
(x + -550) equal to 750 and -750.

Subproblem 1

x + -550 = 750 Simplifying x + -550 = 750 Reorder the terms: -550 + x = 750 Solving -550 + x = 750 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '550' to each side of the equation. -550 + 550 + x = 750 + 550 Combine like terms: -550 + 550 = 0 0 + x = 750 + 550 x = 750 + 550 Combine like terms: 750 + 550 = 1300 x = 1300 Simplifying x = 1300

Subproblem 2

x + -550 = -750 Simplifying x + -550 = -750 Reorder the terms: -550 + x = -750 Solving -550 + x = -750 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '550' to each side of the equation. -550 + 550 + x = -750 + 550 Combine like terms: -550 + 550 = 0 0 + x = -750 + 550 x = -750 + 550 Combine like terms: -750 + 550 = -200 x = -200 Simplifying x = -200

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1300, -200}

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