3x^2-29x-30=0

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Solution for 3x^2-29x-30=0 equation:


Simplifying
3x2 + -29x + -30 = 0

Reorder the terms:
-30 + -29x + 3x2 = 0

Solving
-30 + -29x + 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'.
-10 + -9.666666667x + x2 = 0

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + -9.666666667x + 10 + x2 = 0 + 10

Reorder the terms:
-10 + 10 + -9.666666667x + x2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + -9.666666667x + x2 = 0 + 10
-9.666666667x + x2 = 0 + 10

Combine like terms: 0 + 10 = 10
-9.666666667x + x2 = 10

The x term is -9.666666667x.  Take half its coefficient (-4.833333334).
Square it (23.36111112) and add it to both sides.

Add '23.36111112' to each side of the equation.
-9.666666667x + 23.36111112 + x2 = 10 + 23.36111112

Reorder the terms:
23.36111112 + -9.666666667x + x2 = 10 + 23.36111112

Combine like terms: 10 + 23.36111112 = 33.36111112
23.36111112 + -9.666666667x + x2 = 33.36111112

Factor a perfect square on the left side:
(x + -4.833333334)(x + -4.833333334) = 33.36111112

Calculate the square root of the right side: 5.775907818

Break this problem into two subproblems by setting 
(x + -4.833333334) equal to 5.775907818 and -5.775907818.

Subproblem 1

x + -4.833333334 = 5.775907818 Simplifying x + -4.833333334 = 5.775907818 Reorder the terms: -4.833333334 + x = 5.775907818 Solving -4.833333334 + x = 5.775907818 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.833333334' to each side of the equation. -4.833333334 + 4.833333334 + x = 5.775907818 + 4.833333334 Combine like terms: -4.833333334 + 4.833333334 = 0.000000000 0.000000000 + x = 5.775907818 + 4.833333334 x = 5.775907818 + 4.833333334 Combine like terms: 5.775907818 + 4.833333334 = 10.609241152 x = 10.609241152 Simplifying x = 10.609241152

Subproblem 2

x + -4.833333334 = -5.775907818 Simplifying x + -4.833333334 = -5.775907818 Reorder the terms: -4.833333334 + x = -5.775907818 Solving -4.833333334 + x = -5.775907818 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '4.833333334' to each side of the equation. -4.833333334 + 4.833333334 + x = -5.775907818 + 4.833333334 Combine like terms: -4.833333334 + 4.833333334 = 0.000000000 0.000000000 + x = -5.775907818 + 4.833333334 x = -5.775907818 + 4.833333334 Combine like terms: -5.775907818 + 4.833333334 = -0.942574484 x = -0.942574484 Simplifying x = -0.942574484

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.609241152, -0.942574484}

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