0=-0.03x^2+1.02x+1.8

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Solution for 0=-0.03x^2+1.02x+1.8 equation:


Simplifying
0 = -0.03x2 + 1.02x + 1.8

Reorder the terms:
0 = 1.8 + 1.02x + -0.03x2

Solving
0 = 1.8 + 1.02x + -0.03x2

Solving for variable 'x'.

Combine like terms: 0 + -1.8 = -1.8
-1.8 + -1.02x + 0.03x2 = 1.8 + 1.02x + -0.03x2 + -1.8 + -1.02x + 0.03x2

Reorder the terms:
-1.8 + -1.02x + 0.03x2 = 1.8 + -1.8 + 1.02x + -1.02x + -0.03x2 + 0.03x2

Combine like terms: 1.8 + -1.8 = 0.0
-1.8 + -1.02x + 0.03x2 = 0.0 + 1.02x + -1.02x + -0.03x2 + 0.03x2
-1.8 + -1.02x + 0.03x2 = 1.02x + -1.02x + -0.03x2 + 0.03x2

Combine like terms: 1.02x + -1.02x = 0.00
-1.8 + -1.02x + 0.03x2 = 0.00 + -0.03x2 + 0.03x2
-1.8 + -1.02x + 0.03x2 = -0.03x2 + 0.03x2

Combine like terms: -0.03x2 + 0.03x2 = 0.00
-1.8 + -1.02x + 0.03x2 = 0.00

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

Divide each side by '0.03'.
-60 + -34x + x2 = 0

Move the constant term to the right:

Add '60' to each side of the equation.
-60 + -34x + 60 + x2 = 0 + 60

Reorder the terms:
-60 + 60 + -34x + x2 = 0 + 60

Combine like terms: -60 + 60 = 0
0 + -34x + x2 = 0 + 60
-34x + x2 = 0 + 60

Combine like terms: 0 + 60 = 60
-34x + x2 = 60

The x term is -34x.  Take half its coefficient (-17).
Square it (289) and add it to both sides.

Add '289' to each side of the equation.
-34x + 289 + x2 = 60 + 289

Reorder the terms:
289 + -34x + x2 = 60 + 289

Combine like terms: 60 + 289 = 349
289 + -34x + x2 = 349

Factor a perfect square on the left side:
(x + -17)(x + -17) = 349

Calculate the square root of the right side: 18.681541692

Break this problem into two subproblems by setting 
(x + -17) equal to 18.681541692 and -18.681541692.

Subproblem 1

x + -17 = 18.681541692 Simplifying x + -17 = 18.681541692 Reorder the terms: -17 + x = 18.681541692 Solving -17 + x = 18.681541692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '17' to each side of the equation. -17 + 17 + x = 18.681541692 + 17 Combine like terms: -17 + 17 = 0 0 + x = 18.681541692 + 17 x = 18.681541692 + 17 Combine like terms: 18.681541692 + 17 = 35.681541692 x = 35.681541692 Simplifying x = 35.681541692

Subproblem 2

x + -17 = -18.681541692 Simplifying x + -17 = -18.681541692 Reorder the terms: -17 + x = -18.681541692 Solving -17 + x = -18.681541692 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '17' to each side of the equation. -17 + 17 + x = -18.681541692 + 17 Combine like terms: -17 + 17 = 0 0 + x = -18.681541692 + 17 x = -18.681541692 + 17 Combine like terms: -18.681541692 + 17 = -1.681541692 x = -1.681541692 Simplifying x = -1.681541692

Solution

The solution to the problem is based on the solutions from the subproblems. x = {35.681541692, -1.681541692}

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