30x^2-27x+2=0

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Solution for 30x^2-27x+2=0 equation:


Simplifying
30x2 + -27x + 2 = 0

Reorder the terms:
2 + -27x + 30x2 = 0

Solving
2 + -27x + 30x2 = 0

Solving for variable 'x'.

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

Divide each side by '30'.
0.06666666667 + -0.9x + x2 = 0

Move the constant term to the right:

Add '-0.06666666667' to each side of the equation.
0.06666666667 + -0.9x + -0.06666666667 + x2 = 0 + -0.06666666667

Reorder the terms:
0.06666666667 + -0.06666666667 + -0.9x + x2 = 0 + -0.06666666667

Combine like terms: 0.06666666667 + -0.06666666667 = 0.00000000000
0.00000000000 + -0.9x + x2 = 0 + -0.06666666667
-0.9x + x2 = 0 + -0.06666666667

Combine like terms: 0 + -0.06666666667 = -0.06666666667
-0.9x + x2 = -0.06666666667

The x term is -0.9x.  Take half its coefficient (-0.45).
Square it (0.2025) and add it to both sides.

Add '0.2025' to each side of the equation.
-0.9x + 0.2025 + x2 = -0.06666666667 + 0.2025

Reorder the terms:
0.2025 + -0.9x + x2 = -0.06666666667 + 0.2025

Combine like terms: -0.06666666667 + 0.2025 = 0.13583333333
0.2025 + -0.9x + x2 = 0.13583333333

Factor a perfect square on the left side:
(x + -0.45)(x + -0.45) = 0.13583333333

Calculate the square root of the right side: 0.36855574

Break this problem into two subproblems by setting 
(x + -0.45) equal to 0.36855574 and -0.36855574.

Subproblem 1

x + -0.45 = 0.36855574 Simplifying x + -0.45 = 0.36855574 Reorder the terms: -0.45 + x = 0.36855574 Solving -0.45 + x = 0.36855574 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.45' to each side of the equation. -0.45 + 0.45 + x = 0.36855574 + 0.45 Combine like terms: -0.45 + 0.45 = 0.00 0.00 + x = 0.36855574 + 0.45 x = 0.36855574 + 0.45 Combine like terms: 0.36855574 + 0.45 = 0.81855574 x = 0.81855574 Simplifying x = 0.81855574

Subproblem 2

x + -0.45 = -0.36855574 Simplifying x + -0.45 = -0.36855574 Reorder the terms: -0.45 + x = -0.36855574 Solving -0.45 + x = -0.36855574 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.45' to each side of the equation. -0.45 + 0.45 + x = -0.36855574 + 0.45 Combine like terms: -0.45 + 0.45 = 0.00 0.00 + x = -0.36855574 + 0.45 x = -0.36855574 + 0.45 Combine like terms: -0.36855574 + 0.45 = 0.08144426 x = 0.08144426 Simplifying x = 0.08144426

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.81855574, 0.08144426}

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