3x^2-36x=-83

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Solution for 3x^2-36x=-83 equation:


Simplifying
3x2 + -36x = -83

Reorder the terms:
-36x + 3x2 = -83

Solving
-36x + 3x2 = -83

Solving for variable 'x'.

Reorder the terms:
83 + -36x + 3x2 = -83 + 83

Combine like terms: -83 + 83 = 0
83 + -36x + 3x2 = 0

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

Divide each side by '3'.
27.66666667 + -12x + x2 = 0

Move the constant term to the right:

Add '-27.66666667' to each side of the equation.
27.66666667 + -12x + -27.66666667 + x2 = 0 + -27.66666667

Reorder the terms:
27.66666667 + -27.66666667 + -12x + x2 = 0 + -27.66666667

Combine like terms: 27.66666667 + -27.66666667 = 0.00000000
0.00000000 + -12x + x2 = 0 + -27.66666667
-12x + x2 = 0 + -27.66666667

Combine like terms: 0 + -27.66666667 = -27.66666667
-12x + x2 = -27.66666667

The x term is -12x.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12x + 36 + x2 = -27.66666667 + 36

Reorder the terms:
36 + -12x + x2 = -27.66666667 + 36

Combine like terms: -27.66666667 + 36 = 8.33333333
36 + -12x + x2 = 8.33333333

Factor a perfect square on the left side:
(x + -6)(x + -6) = 8.33333333

Calculate the square root of the right side: 2.886751345

Break this problem into two subproblems by setting 
(x + -6) equal to 2.886751345 and -2.886751345.

Subproblem 1

x + -6 = 2.886751345 Simplifying x + -6 = 2.886751345 Reorder the terms: -6 + x = 2.886751345 Solving -6 + x = 2.886751345 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = 2.886751345 + 6 Combine like terms: -6 + 6 = 0 0 + x = 2.886751345 + 6 x = 2.886751345 + 6 Combine like terms: 2.886751345 + 6 = 8.886751345 x = 8.886751345 Simplifying x = 8.886751345

Subproblem 2

x + -6 = -2.886751345 Simplifying x + -6 = -2.886751345 Reorder the terms: -6 + x = -2.886751345 Solving -6 + x = -2.886751345 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + x = -2.886751345 + 6 Combine like terms: -6 + 6 = 0 0 + x = -2.886751345 + 6 x = -2.886751345 + 6 Combine like terms: -2.886751345 + 6 = 3.113248655 x = 3.113248655 Simplifying x = 3.113248655

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.886751345, 3.113248655}

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