3x^2-51x+154=0

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Solution for 3x^2-51x+154=0 equation:


Simplifying
3x2 + -51x + 154 = 0

Reorder the terms:
154 + -51x + 3x2 = 0

Solving
154 + -51x + 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'.
51.33333333 + -17x + x2 = 0

Move the constant term to the right:

Add '-51.33333333' to each side of the equation.
51.33333333 + -17x + -51.33333333 + x2 = 0 + -51.33333333

Reorder the terms:
51.33333333 + -51.33333333 + -17x + x2 = 0 + -51.33333333

Combine like terms: 51.33333333 + -51.33333333 = 0.00000000
0.00000000 + -17x + x2 = 0 + -51.33333333
-17x + x2 = 0 + -51.33333333

Combine like terms: 0 + -51.33333333 = -51.33333333
-17x + x2 = -51.33333333

The x term is -17x.  Take half its coefficient (-8.5).
Square it (72.25) and add it to both sides.

Add '72.25' to each side of the equation.
-17x + 72.25 + x2 = -51.33333333 + 72.25

Reorder the terms:
72.25 + -17x + x2 = -51.33333333 + 72.25

Combine like terms: -51.33333333 + 72.25 = 20.91666667
72.25 + -17x + x2 = 20.91666667

Factor a perfect square on the left side:
(x + -8.5)(x + -8.5) = 20.91666667

Calculate the square root of the right side: 4.573474245

Break this problem into two subproblems by setting 
(x + -8.5) equal to 4.573474245 and -4.573474245.

Subproblem 1

x + -8.5 = 4.573474245 Simplifying x + -8.5 = 4.573474245 Reorder the terms: -8.5 + x = 4.573474245 Solving -8.5 + x = 4.573474245 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.5' to each side of the equation. -8.5 + 8.5 + x = 4.573474245 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + x = 4.573474245 + 8.5 x = 4.573474245 + 8.5 Combine like terms: 4.573474245 + 8.5 = 13.073474245 x = 13.073474245 Simplifying x = 13.073474245

Subproblem 2

x + -8.5 = -4.573474245 Simplifying x + -8.5 = -4.573474245 Reorder the terms: -8.5 + x = -4.573474245 Solving -8.5 + x = -4.573474245 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8.5' to each side of the equation. -8.5 + 8.5 + x = -4.573474245 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + x = -4.573474245 + 8.5 x = -4.573474245 + 8.5 Combine like terms: -4.573474245 + 8.5 = 3.926525755 x = 3.926525755 Simplifying x = 3.926525755

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.073474245, 3.926525755}

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