3=-16x^2+144x

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Solution for 3=-16x^2+144x equation:


Simplifying
3 = -16x2 + 144x

Reorder the terms:
3 = 144x + -16x2

Solving
3 = 144x + -16x2

Solving for variable 'x'.

Reorder the terms:
3 + -144x + 16x2 = 144x + -144x + -16x2 + 16x2

Combine like terms: 144x + -144x = 0
3 + -144x + 16x2 = 0 + -16x2 + 16x2
3 + -144x + 16x2 = -16x2 + 16x2

Combine like terms: -16x2 + 16x2 = 0
3 + -144x + 16x2 = 0

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

Divide each side by '16'.
0.1875 + -9x + x2 = 0

Move the constant term to the right:

Add '-0.1875' to each side of the equation.
0.1875 + -9x + -0.1875 + x2 = 0 + -0.1875

Reorder the terms:
0.1875 + -0.1875 + -9x + x2 = 0 + -0.1875

Combine like terms: 0.1875 + -0.1875 = 0.0000
0.0000 + -9x + x2 = 0 + -0.1875
-9x + x2 = 0 + -0.1875

Combine like terms: 0 + -0.1875 = -0.1875
-9x + x2 = -0.1875

The x term is -9x.  Take half its coefficient (-4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
-9x + 20.25 + x2 = -0.1875 + 20.25

Reorder the terms:
20.25 + -9x + x2 = -0.1875 + 20.25

Combine like terms: -0.1875 + 20.25 = 20.0625
20.25 + -9x + x2 = 20.0625

Factor a perfect square on the left side:
(x + -4.5)(x + -4.5) = 20.0625

Calculate the square root of the right side: 4.479118217

Break this problem into two subproblems by setting 
(x + -4.5) equal to 4.479118217 and -4.479118217.

Subproblem 1

x + -4.5 = 4.479118217 Simplifying x + -4.5 = 4.479118217 Reorder the terms: -4.5 + x = 4.479118217 Solving -4.5 + x = 4.479118217 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.5' to each side of the equation. -4.5 + 4.5 + x = 4.479118217 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + x = 4.479118217 + 4.5 x = 4.479118217 + 4.5 Combine like terms: 4.479118217 + 4.5 = 8.979118217 x = 8.979118217 Simplifying x = 8.979118217

Subproblem 2

x + -4.5 = -4.479118217 Simplifying x + -4.5 = -4.479118217 Reorder the terms: -4.5 + x = -4.479118217 Solving -4.5 + x = -4.479118217 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.5' to each side of the equation. -4.5 + 4.5 + x = -4.479118217 + 4.5 Combine like terms: -4.5 + 4.5 = 0.0 0.0 + x = -4.479118217 + 4.5 x = -4.479118217 + 4.5 Combine like terms: -4.479118217 + 4.5 = 0.020881783 x = 0.020881783 Simplifying x = 0.020881783

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.979118217, 0.020881783}

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