12=-x^2+24x

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Solution for 12=-x^2+24x equation:


Simplifying
12 = -1x2 + 24x

Reorder the terms:
12 = 24x + -1x2

Solving
12 = 24x + -1x2

Solving for variable 'x'.

Reorder the terms:
12 + -24x + x2 = 24x + -24x + -1x2 + x2

Combine like terms: 24x + -24x = 0
12 + -24x + x2 = 0 + -1x2 + x2
12 + -24x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
12 + -24x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-12' to each side of the equation.
12 + -24x + -12 + x2 = 0 + -12

Reorder the terms:
12 + -12 + -24x + x2 = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -24x + x2 = 0 + -12
-24x + x2 = 0 + -12

Combine like terms: 0 + -12 = -12
-24x + x2 = -12

The x term is -24x.  Take half its coefficient (-12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
-24x + 144 + x2 = -12 + 144

Reorder the terms:
144 + -24x + x2 = -12 + 144

Combine like terms: -12 + 144 = 132
144 + -24x + x2 = 132

Factor a perfect square on the left side:
(x + -12)(x + -12) = 132

Calculate the square root of the right side: 11.489125293

Break this problem into two subproblems by setting 
(x + -12) equal to 11.489125293 and -11.489125293.

Subproblem 1

x + -12 = 11.489125293 Simplifying x + -12 = 11.489125293 Reorder the terms: -12 + x = 11.489125293 Solving -12 + x = 11.489125293 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + x = 11.489125293 + 12 Combine like terms: -12 + 12 = 0 0 + x = 11.489125293 + 12 x = 11.489125293 + 12 Combine like terms: 11.489125293 + 12 = 23.489125293 x = 23.489125293 Simplifying x = 23.489125293

Subproblem 2

x + -12 = -11.489125293 Simplifying x + -12 = -11.489125293 Reorder the terms: -12 + x = -11.489125293 Solving -12 + x = -11.489125293 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + x = -11.489125293 + 12 Combine like terms: -12 + 12 = 0 0 + x = -11.489125293 + 12 x = -11.489125293 + 12 Combine like terms: -11.489125293 + 12 = 0.510874707 x = 0.510874707 Simplifying x = 0.510874707

Solution

The solution to the problem is based on the solutions from the subproblems. x = {23.489125293, 0.510874707}

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