720=-0.5x^2+50x-472

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Solution for 720=-0.5x^2+50x-472 equation:


Simplifying
720 = -0.5x2 + 50x + -472

Reorder the terms:
720 = -472 + 50x + -0.5x2

Solving
720 = -472 + 50x + -0.5x2

Solving for variable 'x'.

Combine like terms: 720 + 472 = 1192
1192 + -50x + 0.5x2 = -472 + 50x + -0.5x2 + 472 + -50x + 0.5x2

Reorder the terms:
1192 + -50x + 0.5x2 = -472 + 472 + 50x + -50x + -0.5x2 + 0.5x2

Combine like terms: -472 + 472 = 0
1192 + -50x + 0.5x2 = 0 + 50x + -50x + -0.5x2 + 0.5x2
1192 + -50x + 0.5x2 = 50x + -50x + -0.5x2 + 0.5x2

Combine like terms: 50x + -50x = 0
1192 + -50x + 0.5x2 = 0 + -0.5x2 + 0.5x2
1192 + -50x + 0.5x2 = -0.5x2 + 0.5x2

Combine like terms: -0.5x2 + 0.5x2 = 0.0
1192 + -50x + 0.5x2 = 0.0

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

Divide each side by '0.5'.
2384 + -100x + x2 = 0

Move the constant term to the right:

Add '-2384' to each side of the equation.
2384 + -100x + -2384 + x2 = 0 + -2384

Reorder the terms:
2384 + -2384 + -100x + x2 = 0 + -2384

Combine like terms: 2384 + -2384 = 0
0 + -100x + x2 = 0 + -2384
-100x + x2 = 0 + -2384

Combine like terms: 0 + -2384 = -2384
-100x + x2 = -2384

The x term is -100x.  Take half its coefficient (-50).
Square it (2500) and add it to both sides.

Add '2500' to each side of the equation.
-100x + 2500 + x2 = -2384 + 2500

Reorder the terms:
2500 + -100x + x2 = -2384 + 2500

Combine like terms: -2384 + 2500 = 116
2500 + -100x + x2 = 116

Factor a perfect square on the left side:
(x + -50)(x + -50) = 116

Calculate the square root of the right side: 10.770329614

Break this problem into two subproblems by setting 
(x + -50) equal to 10.770329614 and -10.770329614.

Subproblem 1

x + -50 = 10.770329614 Simplifying x + -50 = 10.770329614 Reorder the terms: -50 + x = 10.770329614 Solving -50 + x = 10.770329614 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '50' to each side of the equation. -50 + 50 + x = 10.770329614 + 50 Combine like terms: -50 + 50 = 0 0 + x = 10.770329614 + 50 x = 10.770329614 + 50 Combine like terms: 10.770329614 + 50 = 60.770329614 x = 60.770329614 Simplifying x = 60.770329614

Subproblem 2

x + -50 = -10.770329614 Simplifying x + -50 = -10.770329614 Reorder the terms: -50 + x = -10.770329614 Solving -50 + x = -10.770329614 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '50' to each side of the equation. -50 + 50 + x = -10.770329614 + 50 Combine like terms: -50 + 50 = 0 0 + x = -10.770329614 + 50 x = -10.770329614 + 50 Combine like terms: -10.770329614 + 50 = 39.229670386 x = 39.229670386 Simplifying x = 39.229670386

Solution

The solution to the problem is based on the solutions from the subproblems. x = {60.770329614, 39.229670386}

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