-3x^2+108x-970=0

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Solution for -3x^2+108x-970=0 equation:


Simplifying
-3x2 + 108x + -970 = 0

Reorder the terms:
-970 + 108x + -3x2 = 0

Solving
-970 + 108x + -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'.
323.3333333 + -36x + x2 = 0

Move the constant term to the right:

Add '-323.3333333' to each side of the equation.
323.3333333 + -36x + -323.3333333 + x2 = 0 + -323.3333333

Reorder the terms:
323.3333333 + -323.3333333 + -36x + x2 = 0 + -323.3333333

Combine like terms: 323.3333333 + -323.3333333 = 0.0000000
0.0000000 + -36x + x2 = 0 + -323.3333333
-36x + x2 = 0 + -323.3333333

Combine like terms: 0 + -323.3333333 = -323.3333333
-36x + x2 = -323.3333333

The x term is -36x.  Take half its coefficient (-18).
Square it (324) and add it to both sides.

Add '324' to each side of the equation.
-36x + 324 + x2 = -323.3333333 + 324

Reorder the terms:
324 + -36x + x2 = -323.3333333 + 324

Combine like terms: -323.3333333 + 324 = 0.6666667
324 + -36x + x2 = 0.6666667

Factor a perfect square on the left side:
(x + -18)(x + -18) = 0.6666667

Calculate the square root of the right side: 0.816496601

Break this problem into two subproblems by setting 
(x + -18) equal to 0.816496601 and -0.816496601.

Subproblem 1

x + -18 = 0.816496601 Simplifying x + -18 = 0.816496601 Reorder the terms: -18 + x = 0.816496601 Solving -18 + x = 0.816496601 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + x = 0.816496601 + 18 Combine like terms: -18 + 18 = 0 0 + x = 0.816496601 + 18 x = 0.816496601 + 18 Combine like terms: 0.816496601 + 18 = 18.816496601 x = 18.816496601 Simplifying x = 18.816496601

Subproblem 2

x + -18 = -0.816496601 Simplifying x + -18 = -0.816496601 Reorder the terms: -18 + x = -0.816496601 Solving -18 + x = -0.816496601 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + x = -0.816496601 + 18 Combine like terms: -18 + 18 = 0 0 + x = -0.816496601 + 18 x = -0.816496601 + 18 Combine like terms: -0.816496601 + 18 = 17.183503399 x = 17.183503399 Simplifying x = 17.183503399

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.816496601, 17.183503399}

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