-2.7x^2-8.02x+4.32=0

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Solution for -2.7x^2-8.02x+4.32=0 equation:


Simplifying
-2.7x2 + -8.02x + 4.32 = 0

Reorder the terms:
4.32 + -8.02x + -2.7x2 = 0

Solving
4.32 + -8.02x + -2.7x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-2.7 the coefficient of the squared term: 

Divide each side by '-2.7'.
-1.6 + 2.97037037x + x2 = 0

Move the constant term to the right:

Add '1.6' to each side of the equation.
-1.6 + 2.97037037x + 1.6 + x2 = 0 + 1.6

Reorder the terms:
-1.6 + 1.6 + 2.97037037x + x2 = 0 + 1.6

Combine like terms: -1.6 + 1.6 = 0.0
0.0 + 2.97037037x + x2 = 0 + 1.6
2.97037037x + x2 = 0 + 1.6

Combine like terms: 0 + 1.6 = 1.6
2.97037037x + x2 = 1.6

The x term is 2.97037037x.  Take half its coefficient (1.485185185).
Square it (2.205775034) and add it to both sides.

Add '2.205775034' to each side of the equation.
2.97037037x + 2.205775034 + x2 = 1.6 + 2.205775034

Reorder the terms:
2.205775034 + 2.97037037x + x2 = 1.6 + 2.205775034

Combine like terms: 1.6 + 2.205775034 = 3.805775034
2.205775034 + 2.97037037x + x2 = 3.805775034

Factor a perfect square on the left side:
(x + 1.485185185)(x + 1.485185185) = 3.805775034

Calculate the square root of the right side: 1.950839572

Break this problem into two subproblems by setting 
(x + 1.485185185) equal to 1.950839572 and -1.950839572.

Subproblem 1

x + 1.485185185 = 1.950839572 Simplifying x + 1.485185185 = 1.950839572 Reorder the terms: 1.485185185 + x = 1.950839572 Solving 1.485185185 + x = 1.950839572 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.485185185' to each side of the equation. 1.485185185 + -1.485185185 + x = 1.950839572 + -1.485185185 Combine like terms: 1.485185185 + -1.485185185 = 0.000000000 0.000000000 + x = 1.950839572 + -1.485185185 x = 1.950839572 + -1.485185185 Combine like terms: 1.950839572 + -1.485185185 = 0.465654387 x = 0.465654387 Simplifying x = 0.465654387

Subproblem 2

x + 1.485185185 = -1.950839572 Simplifying x + 1.485185185 = -1.950839572 Reorder the terms: 1.485185185 + x = -1.950839572 Solving 1.485185185 + x = -1.950839572 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.485185185' to each side of the equation. 1.485185185 + -1.485185185 + x = -1.950839572 + -1.485185185 Combine like terms: 1.485185185 + -1.485185185 = 0.000000000 0.000000000 + x = -1.950839572 + -1.485185185 x = -1.950839572 + -1.485185185 Combine like terms: -1.950839572 + -1.485185185 = -3.436024757 x = -3.436024757 Simplifying x = -3.436024757

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.465654387, -3.436024757}

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