(3x^2)-2(3x)=35

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Solution for (3x^2)-2(3x)=35 equation:


Simplifying
(3x2) + -2(3x) = 35

Remove parenthesis around (3x)
(3x2) + -2 * 3x = 35

Multiply -2 * 3
(3x2) + -6x = 35

Reorder the terms:
-6x + (3x2) = 35

Solving
-6x + (3x2) = 35

Solving for variable 'x'.

Reorder the terms:
-35 + -6x + (3x2) = 35 + -35

Combine like terms: 35 + -35 = 0
-35 + -6x + (3x2) = 0

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

Divide each side by '3'.
-11.66666667 + -2x + x2 = 0

Move the constant term to the right:

Add '11.66666667' to each side of the equation.
-11.66666667 + -2x + 11.66666667 + x2 = 0 + 11.66666667

Reorder the terms:
-11.66666667 + 11.66666667 + -2x + x2 = 0 + 11.66666667

Combine like terms: -11.66666667 + 11.66666667 = 0.00000000
0.00000000 + -2x + x2 = 0 + 11.66666667
-2x + x2 = 0 + 11.66666667

Combine like terms: 0 + 11.66666667 = 11.66666667
-2x + x2 = 11.66666667

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 11.66666667 + 1

Reorder the terms:
1 + -2x + x2 = 11.66666667 + 1

Combine like terms: 11.66666667 + 1 = 12.66666667
1 + -2x + x2 = 12.66666667

Factor a perfect square on the left side:
((x) + -1)((x) + -1) = 12.66666667

Calculate the square root of the right side: 3.559026084

Break this problem into two subproblems by setting 
((x) + -1) equal to 3.559026084 and -3.559026084.

Subproblem 1

(x) + -1 = 3.559026084 Simplifying (x) + -1 = 3.559026084 x + -1 = 3.559026084 Reorder the terms: -1 + x = 3.559026084 Solving -1 + x = 3.559026084 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 3.559026084 + 1 Combine like terms: -1 + 1 = 0 0 + x = 3.559026084 + 1 x = 3.559026084 + 1 Combine like terms: 3.559026084 + 1 = 4.559026084 x = 4.559026084 Simplifying x = 4.559026084

Subproblem 2

(x) + -1 = -3.559026084 Simplifying (x) + -1 = -3.559026084 x + -1 = -3.559026084 Reorder the terms: -1 + x = -3.559026084 Solving -1 + x = -3.559026084 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -3.559026084 + 1 Combine like terms: -1 + 1 = 0 0 + x = -3.559026084 + 1 x = -3.559026084 + 1 Combine like terms: -3.559026084 + 1 = -2.559026084 x = -2.559026084 Simplifying x = -2.559026084

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.559026084, -2.559026084}

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