-0.06x^2=9.6x+5.4

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


Simplifying
-0.06x2 = 9.6x + 5.4

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

Solving
-0.06x2 = 5.4 + 9.6x

Solving for variable 'x'.

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

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

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

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

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 = 6310
6400 + 160x + x2 = 6310

Factor a perfect square on the left side:
(x + 80)(x + 80) = 6310

Calculate the square root of the right side: 79.435508433

Break this problem into two subproblems by setting 
(x + 80) equal to 79.435508433 and -79.435508433.

Subproblem 1

x + 80 = 79.435508433 Simplifying x + 80 = 79.435508433 Reorder the terms: 80 + x = 79.435508433 Solving 80 + x = 79.435508433 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 = 79.435508433 + -80 Combine like terms: 80 + -80 = 0 0 + x = 79.435508433 + -80 x = 79.435508433 + -80 Combine like terms: 79.435508433 + -80 = -0.564491567 x = -0.564491567 Simplifying x = -0.564491567

Subproblem 2

x + 80 = -79.435508433 Simplifying x + 80 = -79.435508433 Reorder the terms: 80 + x = -79.435508433 Solving 80 + x = -79.435508433 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 = -79.435508433 + -80 Combine like terms: 80 + -80 = 0 0 + x = -79.435508433 + -80 x = -79.435508433 + -80 Combine like terms: -79.435508433 + -80 = -159.435508433 x = -159.435508433 Simplifying x = -159.435508433

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.564491567, -159.435508433}

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