24x-.2x^2=8x+300

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Solution for 24x-.2x^2=8x+300 equation:


Simplifying
24x + -0.2x2 = 8x + 300

Reorder the terms:
24x + -0.2x2 = 300 + 8x

Solving
24x + -0.2x2 = 300 + 8x

Solving for variable 'x'.

Reorder the terms:
-300 + 24x + -8x + -0.2x2 = 300 + 8x + -300 + -8x

Combine like terms: 24x + -8x = 16x
-300 + 16x + -0.2x2 = 300 + 8x + -300 + -8x

Reorder the terms:
-300 + 16x + -0.2x2 = 300 + -300 + 8x + -8x

Combine like terms: 300 + -300 = 0
-300 + 16x + -0.2x2 = 0 + 8x + -8x
-300 + 16x + -0.2x2 = 8x + -8x

Combine like terms: 8x + -8x = 0
-300 + 16x + -0.2x2 = 0

Begin completing the square.  Divide all terms by
-0.2 the coefficient of the squared term: 

Divide each side by '-0.2'.
1500 + -80x + x2 = 0

Move the constant term to the right:

Add '-1500' to each side of the equation.
1500 + -80x + -1500 + x2 = 0 + -1500

Reorder the terms:
1500 + -1500 + -80x + x2 = 0 + -1500

Combine like terms: 1500 + -1500 = 0
0 + -80x + x2 = 0 + -1500
-80x + x2 = 0 + -1500

Combine like terms: 0 + -1500 = -1500
-80x + x2 = -1500

The x term is -80x.  Take half its coefficient (-40).
Square it (1600) and add it to both sides.

Add '1600' to each side of the equation.
-80x + 1600 + x2 = -1500 + 1600

Reorder the terms:
1600 + -80x + x2 = -1500 + 1600

Combine like terms: -1500 + 1600 = 100
1600 + -80x + x2 = 100

Factor a perfect square on the left side:
(x + -40)(x + -40) = 100

Calculate the square root of the right side: 10

Break this problem into two subproblems by setting 
(x + -40) equal to 10 and -10.

Subproblem 1

x + -40 = 10 Simplifying x + -40 = 10 Reorder the terms: -40 + x = 10 Solving -40 + x = 10 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '40' to each side of the equation. -40 + 40 + x = 10 + 40 Combine like terms: -40 + 40 = 0 0 + x = 10 + 40 x = 10 + 40 Combine like terms: 10 + 40 = 50 x = 50 Simplifying x = 50

Subproblem 2

x + -40 = -10 Simplifying x + -40 = -10 Reorder the terms: -40 + x = -10 Solving -40 + x = -10 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '40' to each side of the equation. -40 + 40 + x = -10 + 40 Combine like terms: -40 + 40 = 0 0 + x = -10 + 40 x = -10 + 40 Combine like terms: -10 + 40 = 30 x = 30 Simplifying x = 30

Solution

The solution to the problem is based on the solutions from the subproblems. x = {50, 30}

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