-3x^2+30x-41=0

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Solution for -3x^2+30x-41=0 equation:


Simplifying
-3x2 + 30x + -41 = 0

Reorder the terms:
-41 + 30x + -3x2 = 0

Solving
-41 + 30x + -3x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
13.66666667 + -10x + x2 = 0

Move the constant term to the right:

Add '-13.66666667' to each side of the equation.
13.66666667 + -10x + -13.66666667 + x2 = 0 + -13.66666667

Reorder the terms:
13.66666667 + -13.66666667 + -10x + x2 = 0 + -13.66666667

Combine like terms: 13.66666667 + -13.66666667 = 0.00000000
0.00000000 + -10x + x2 = 0 + -13.66666667
-10x + x2 = 0 + -13.66666667

Combine like terms: 0 + -13.66666667 = -13.66666667
-10x + x2 = -13.66666667

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = -13.66666667 + 25

Reorder the terms:
25 + -10x + x2 = -13.66666667 + 25

Combine like terms: -13.66666667 + 25 = 11.33333333
25 + -10x + x2 = 11.33333333

Factor a perfect square on the left side:
(x + -5)(x + -5) = 11.33333333

Calculate the square root of the right side: 3.366501646

Break this problem into two subproblems by setting 
(x + -5) equal to 3.366501646 and -3.366501646.

Subproblem 1

x + -5 = 3.366501646 Simplifying x + -5 = 3.366501646 Reorder the terms: -5 + x = 3.366501646 Solving -5 + x = 3.366501646 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = 3.366501646 + 5 Combine like terms: -5 + 5 = 0 0 + x = 3.366501646 + 5 x = 3.366501646 + 5 Combine like terms: 3.366501646 + 5 = 8.366501646 x = 8.366501646 Simplifying x = 8.366501646

Subproblem 2

x + -5 = -3.366501646 Simplifying x + -5 = -3.366501646 Reorder the terms: -5 + x = -3.366501646 Solving -5 + x = -3.366501646 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + x = -3.366501646 + 5 Combine like terms: -5 + 5 = 0 0 + x = -3.366501646 + 5 x = -3.366501646 + 5 Combine like terms: -3.366501646 + 5 = 1.633498354 x = 1.633498354 Simplifying x = 1.633498354

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.366501646, 1.633498354}

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