0=3x^2-63x+170

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Solution for 0=3x^2-63x+170 equation:


Simplifying
0 = 3x2 + -63x + 170

Reorder the terms:
0 = 170 + -63x + 3x2

Solving
0 = 170 + -63x + 3x2

Solving for variable 'x'.

Combine like terms: 0 + -170 = -170
-170 + 63x + -3x2 = 170 + -63x + 3x2 + -170 + 63x + -3x2

Reorder the terms:
-170 + 63x + -3x2 = 170 + -170 + -63x + 63x + 3x2 + -3x2

Combine like terms: 170 + -170 = 0
-170 + 63x + -3x2 = 0 + -63x + 63x + 3x2 + -3x2
-170 + 63x + -3x2 = -63x + 63x + 3x2 + -3x2

Combine like terms: -63x + 63x = 0
-170 + 63x + -3x2 = 0 + 3x2 + -3x2
-170 + 63x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
-170 + 63x + -3x2 = 0

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

Divide each side by '-3'.
56.66666667 + -21x + x2 = 0

Move the constant term to the right:

Add '-56.66666667' to each side of the equation.
56.66666667 + -21x + -56.66666667 + x2 = 0 + -56.66666667

Reorder the terms:
56.66666667 + -56.66666667 + -21x + x2 = 0 + -56.66666667

Combine like terms: 56.66666667 + -56.66666667 = 0.00000000
0.00000000 + -21x + x2 = 0 + -56.66666667
-21x + x2 = 0 + -56.66666667

Combine like terms: 0 + -56.66666667 = -56.66666667
-21x + x2 = -56.66666667

The x term is -21x.  Take half its coefficient (-10.5).
Square it (110.25) and add it to both sides.

Add '110.25' to each side of the equation.
-21x + 110.25 + x2 = -56.66666667 + 110.25

Reorder the terms:
110.25 + -21x + x2 = -56.66666667 + 110.25

Combine like terms: -56.66666667 + 110.25 = 53.58333333
110.25 + -21x + x2 = 53.58333333

Factor a perfect square on the left side:
(x + -10.5)(x + -10.5) = 53.58333333

Calculate the square root of the right side: 7.320063752

Break this problem into two subproblems by setting 
(x + -10.5) equal to 7.320063752 and -7.320063752.

Subproblem 1

x + -10.5 = 7.320063752 Simplifying x + -10.5 = 7.320063752 Reorder the terms: -10.5 + x = 7.320063752 Solving -10.5 + x = 7.320063752 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10.5' to each side of the equation. -10.5 + 10.5 + x = 7.320063752 + 10.5 Combine like terms: -10.5 + 10.5 = 0.0 0.0 + x = 7.320063752 + 10.5 x = 7.320063752 + 10.5 Combine like terms: 7.320063752 + 10.5 = 17.820063752 x = 17.820063752 Simplifying x = 17.820063752

Subproblem 2

x + -10.5 = -7.320063752 Simplifying x + -10.5 = -7.320063752 Reorder the terms: -10.5 + x = -7.320063752 Solving -10.5 + x = -7.320063752 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '10.5' to each side of the equation. -10.5 + 10.5 + x = -7.320063752 + 10.5 Combine like terms: -10.5 + 10.5 = 0.0 0.0 + x = -7.320063752 + 10.5 x = -7.320063752 + 10.5 Combine like terms: -7.320063752 + 10.5 = 3.179936248 x = 3.179936248 Simplifying x = 3.179936248

Solution

The solution to the problem is based on the solutions from the subproblems. x = {17.820063752, 3.179936248}

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