3x^2-60x-100=0

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Solution for 3x^2-60x-100=0 equation:


Simplifying
3x2 + -60x + -100 = 0

Reorder the terms:
-100 + -60x + 3x2 = 0

Solving
-100 + -60x + 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'.
-33.33333333 + -20x + x2 = 0

Move the constant term to the right:

Add '33.33333333' to each side of the equation.
-33.33333333 + -20x + 33.33333333 + x2 = 0 + 33.33333333

Reorder the terms:
-33.33333333 + 33.33333333 + -20x + x2 = 0 + 33.33333333

Combine like terms: -33.33333333 + 33.33333333 = 0.00000000
0.00000000 + -20x + x2 = 0 + 33.33333333
-20x + x2 = 0 + 33.33333333

Combine like terms: 0 + 33.33333333 = 33.33333333
-20x + x2 = 33.33333333

The x term is -20x.  Take half its coefficient (-10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
-20x + 100 + x2 = 33.33333333 + 100

Reorder the terms:
100 + -20x + x2 = 33.33333333 + 100

Combine like terms: 33.33333333 + 100 = 133.33333333
100 + -20x + x2 = 133.33333333

Factor a perfect square on the left side:
(x + -10)(x + -10) = 133.33333333

Calculate the square root of the right side: 11.547005384

Break this problem into two subproblems by setting 
(x + -10) equal to 11.547005384 and -11.547005384.

Subproblem 1

x + -10 = 11.547005384 Simplifying x + -10 = 11.547005384 Reorder the terms: -10 + x = 11.547005384 Solving -10 + x = 11.547005384 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = 11.547005384 + 10 Combine like terms: -10 + 10 = 0 0 + x = 11.547005384 + 10 x = 11.547005384 + 10 Combine like terms: 11.547005384 + 10 = 21.547005384 x = 21.547005384 Simplifying x = 21.547005384

Subproblem 2

x + -10 = -11.547005384 Simplifying x + -10 = -11.547005384 Reorder the terms: -10 + x = -11.547005384 Solving -10 + x = -11.547005384 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + x = -11.547005384 + 10 Combine like terms: -10 + 10 = 0 0 + x = -11.547005384 + 10 x = -11.547005384 + 10 Combine like terms: -11.547005384 + 10 = -1.547005384 x = -1.547005384 Simplifying x = -1.547005384

Solution

The solution to the problem is based on the solutions from the subproblems. x = {21.547005384, -1.547005384}

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