3*x^2-154*x+1120=0

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Solution for 3*x^2-154*x+1120=0 equation:


Simplifying
3x2 + -154x + 1120 = 0

Reorder the terms:
1120 + -154x + 3x2 = 0

Solving
1120 + -154x + 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'.
373.3333333 + -51.33333333x + x2 = 0

Move the constant term to the right:

Add '-373.3333333' to each side of the equation.
373.3333333 + -51.33333333x + -373.3333333 + x2 = 0 + -373.3333333

Reorder the terms:
373.3333333 + -373.3333333 + -51.33333333x + x2 = 0 + -373.3333333

Combine like terms: 373.3333333 + -373.3333333 = 0.0000000
0.0000000 + -51.33333333x + x2 = 0 + -373.3333333
-51.33333333x + x2 = 0 + -373.3333333

Combine like terms: 0 + -373.3333333 = -373.3333333
-51.33333333x + x2 = -373.3333333

The x term is -51.33333333x.  Take half its coefficient (-25.66666667).
Square it (658.7777779) and add it to both sides.

Add '658.7777779' to each side of the equation.
-51.33333333x + 658.7777779 + x2 = -373.3333333 + 658.7777779

Reorder the terms:
658.7777779 + -51.33333333x + x2 = -373.3333333 + 658.7777779

Combine like terms: -373.3333333 + 658.7777779 = 285.4444446
658.7777779 + -51.33333333x + x2 = 285.4444446

Factor a perfect square on the left side:
(x + -25.66666667)(x + -25.66666667) = 285.4444446

Calculate the square root of the right side: 16.895101201

Break this problem into two subproblems by setting 
(x + -25.66666667) equal to 16.895101201 and -16.895101201.

Subproblem 1

x + -25.66666667 = 16.895101201 Simplifying x + -25.66666667 = 16.895101201 Reorder the terms: -25.66666667 + x = 16.895101201 Solving -25.66666667 + x = 16.895101201 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '25.66666667' to each side of the equation. -25.66666667 + 25.66666667 + x = 16.895101201 + 25.66666667 Combine like terms: -25.66666667 + 25.66666667 = 0.00000000 0.00000000 + x = 16.895101201 + 25.66666667 x = 16.895101201 + 25.66666667 Combine like terms: 16.895101201 + 25.66666667 = 42.561767871 x = 42.561767871 Simplifying x = 42.561767871

Subproblem 2

x + -25.66666667 = -16.895101201 Simplifying x + -25.66666667 = -16.895101201 Reorder the terms: -25.66666667 + x = -16.895101201 Solving -25.66666667 + x = -16.895101201 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '25.66666667' to each side of the equation. -25.66666667 + 25.66666667 + x = -16.895101201 + 25.66666667 Combine like terms: -25.66666667 + 25.66666667 = 0.00000000 0.00000000 + x = -16.895101201 + 25.66666667 x = -16.895101201 + 25.66666667 Combine like terms: -16.895101201 + 25.66666667 = 8.771565469 x = 8.771565469 Simplifying x = 8.771565469

Solution

The solution to the problem is based on the solutions from the subproblems. x = {42.561767871, 8.771565469}

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