3x^2-35x=54

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Solution for 3x^2-35x=54 equation:


Simplifying
3x2 + -35x = 54

Reorder the terms:
-35x + 3x2 = 54

Solving
-35x + 3x2 = 54

Solving for variable 'x'.

Reorder the terms:
-54 + -35x + 3x2 = 54 + -54

Combine like terms: 54 + -54 = 0
-54 + -35x + 3x2 = 0

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

Divide each side by '3'.
-18 + -11.66666667x + x2 = 0

Move the constant term to the right:

Add '18' to each side of the equation.
-18 + -11.66666667x + 18 + x2 = 0 + 18

Reorder the terms:
-18 + 18 + -11.66666667x + x2 = 0 + 18

Combine like terms: -18 + 18 = 0
0 + -11.66666667x + x2 = 0 + 18
-11.66666667x + x2 = 0 + 18

Combine like terms: 0 + 18 = 18
-11.66666667x + x2 = 18

The x term is -11.66666667x.  Take half its coefficient (-5.833333335).
Square it (34.02777780) and add it to both sides.

Add '34.02777780' to each side of the equation.
-11.66666667x + 34.02777780 + x2 = 18 + 34.02777780

Reorder the terms:
34.02777780 + -11.66666667x + x2 = 18 + 34.02777780

Combine like terms: 18 + 34.02777780 = 52.0277778
34.02777780 + -11.66666667x + x2 = 52.0277778

Factor a perfect square on the left side:
(x + -5.833333335)(x + -5.833333335) = 52.0277778

Calculate the square root of the right side: 7.213028338

Break this problem into two subproblems by setting 
(x + -5.833333335) equal to 7.213028338 and -7.213028338.

Subproblem 1

x + -5.833333335 = 7.213028338 Simplifying x + -5.833333335 = 7.213028338 Reorder the terms: -5.833333335 + x = 7.213028338 Solving -5.833333335 + x = 7.213028338 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.833333335' to each side of the equation. -5.833333335 + 5.833333335 + x = 7.213028338 + 5.833333335 Combine like terms: -5.833333335 + 5.833333335 = 0.000000000 0.000000000 + x = 7.213028338 + 5.833333335 x = 7.213028338 + 5.833333335 Combine like terms: 7.213028338 + 5.833333335 = 13.046361673 x = 13.046361673 Simplifying x = 13.046361673

Subproblem 2

x + -5.833333335 = -7.213028338 Simplifying x + -5.833333335 = -7.213028338 Reorder the terms: -5.833333335 + x = -7.213028338 Solving -5.833333335 + x = -7.213028338 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.833333335' to each side of the equation. -5.833333335 + 5.833333335 + x = -7.213028338 + 5.833333335 Combine like terms: -5.833333335 + 5.833333335 = 0.000000000 0.000000000 + x = -7.213028338 + 5.833333335 x = -7.213028338 + 5.833333335 Combine like terms: -7.213028338 + 5.833333335 = -1.379695003 x = -1.379695003 Simplifying x = -1.379695003

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.046361673, -1.379695003}

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