0=-0.06x^2+9.6x+5.4

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Solution for 0=-0.06x^2+9.6x+5.4 equation:


Simplifying
0 = -0.06x2 + 9.6x + 5.4

Reorder the terms:
0 = 5.4 + 9.6x + -0.06x2

Solving
0 = 5.4 + 9.6x + -0.06x2

Solving for variable 'x'.

Combine like terms: 0 + -5.4 = -5.4
-5.4 + -9.6x + 0.06x2 = 5.4 + 9.6x + -0.06x2 + -5.4 + -9.6x + 0.06x2

Reorder the terms:
-5.4 + -9.6x + 0.06x2 = 5.4 + -5.4 + 9.6x + -9.6x + -0.06x2 + 0.06x2

Combine like terms: 5.4 + -5.4 = 0.0
-5.4 + -9.6x + 0.06x2 = 0.0 + 9.6x + -9.6x + -0.06x2 + 0.06x2
-5.4 + -9.6x + 0.06x2 = 9.6x + -9.6x + -0.06x2 + 0.06x2

Combine like terms: 9.6x + -9.6x = 0.0
-5.4 + -9.6x + 0.06x2 = 0.0 + -0.06x2 + 0.06x2
-5.4 + -9.6x + 0.06x2 = -0.06x2 + 0.06x2

Combine like terms: -0.06x2 + 0.06x2 = 0.00
-5.4 + -9.6x + 0.06x2 = 0.00

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

Divide each side by '0.06'.
-90 + -160x + x2 = 0

Move the constant term to the right:

Add '90' to each side of the equation.
-90 + -160x + 90 + x2 = 0 + 90

Reorder the terms:
-90 + 90 + -160x + x2 = 0 + 90

Combine like terms: -90 + 90 = 0
0 + -160x + x2 = 0 + 90
-160x + x2 = 0 + 90

Combine like terms: 0 + 90 = 90
-160x + x2 = 90

The x term is -160x.  Take half its coefficient (-80).
Square it (6400) and add it to both sides.

Add '6400' to each side of the equation.
-160x + 6400 + x2 = 90 + 6400

Reorder the terms:
6400 + -160x + x2 = 90 + 6400

Combine like terms: 90 + 6400 = 6490
6400 + -160x + x2 = 6490

Factor a perfect square on the left side:
(x + -80)(x + -80) = 6490

Calculate the square root of the right side: 80.560536244

Break this problem into two subproblems by setting 
(x + -80) equal to 80.560536244 and -80.560536244.

Subproblem 1

x + -80 = 80.560536244 Simplifying x + -80 = 80.560536244 Reorder the terms: -80 + x = 80.560536244 Solving -80 + x = 80.560536244 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '80' to each side of the equation. -80 + 80 + x = 80.560536244 + 80 Combine like terms: -80 + 80 = 0 0 + x = 80.560536244 + 80 x = 80.560536244 + 80 Combine like terms: 80.560536244 + 80 = 160.560536244 x = 160.560536244 Simplifying x = 160.560536244

Subproblem 2

x + -80 = -80.560536244 Simplifying x + -80 = -80.560536244 Reorder the terms: -80 + x = -80.560536244 Solving -80 + x = -80.560536244 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '80' to each side of the equation. -80 + 80 + x = -80.560536244 + 80 Combine like terms: -80 + 80 = 0 0 + x = -80.560536244 + 80 x = -80.560536244 + 80 Combine like terms: -80.560536244 + 80 = -0.560536244 x = -0.560536244 Simplifying x = -0.560536244

Solution

The solution to the problem is based on the solutions from the subproblems. x = {160.560536244, -0.560536244}

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