780=3x^2-22x+48

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Solution for 780=3x^2-22x+48 equation:


Simplifying
780 = 3x2 + -22x + 48

Reorder the terms:
780 = 48 + -22x + 3x2

Solving
780 = 48 + -22x + 3x2

Solving for variable 'x'.

Combine like terms: 780 + -48 = 732
732 + 22x + -3x2 = 48 + -22x + 3x2 + -48 + 22x + -3x2

Reorder the terms:
732 + 22x + -3x2 = 48 + -48 + -22x + 22x + 3x2 + -3x2

Combine like terms: 48 + -48 = 0
732 + 22x + -3x2 = 0 + -22x + 22x + 3x2 + -3x2
732 + 22x + -3x2 = -22x + 22x + 3x2 + -3x2

Combine like terms: -22x + 22x = 0
732 + 22x + -3x2 = 0 + 3x2 + -3x2
732 + 22x + -3x2 = 3x2 + -3x2

Combine like terms: 3x2 + -3x2 = 0
732 + 22x + -3x2 = 0

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

Divide each side by '-3'.
-244 + -7.333333333x + x2 = 0

Move the constant term to the right:

Add '244' to each side of the equation.
-244 + -7.333333333x + 244 + x2 = 0 + 244

Reorder the terms:
-244 + 244 + -7.333333333x + x2 = 0 + 244

Combine like terms: -244 + 244 = 0
0 + -7.333333333x + x2 = 0 + 244
-7.333333333x + x2 = 0 + 244

Combine like terms: 0 + 244 = 244
-7.333333333x + x2 = 244

The x term is -7.333333333x.  Take half its coefficient (-3.666666667).
Square it (13.44444445) and add it to both sides.

Add '13.44444445' to each side of the equation.
-7.333333333x + 13.44444445 + x2 = 244 + 13.44444445

Reorder the terms:
13.44444445 + -7.333333333x + x2 = 244 + 13.44444445

Combine like terms: 244 + 13.44444445 = 257.44444445
13.44444445 + -7.333333333x + x2 = 257.44444445

Factor a perfect square on the left side:
(x + -3.666666667)(x + -3.666666667) = 257.44444445

Calculate the square root of the right side: 16.045075396

Break this problem into two subproblems by setting 
(x + -3.666666667) equal to 16.045075396 and -16.045075396.

Subproblem 1

x + -3.666666667 = 16.045075396 Simplifying x + -3.666666667 = 16.045075396 Reorder the terms: -3.666666667 + x = 16.045075396 Solving -3.666666667 + x = 16.045075396 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.666666667' to each side of the equation. -3.666666667 + 3.666666667 + x = 16.045075396 + 3.666666667 Combine like terms: -3.666666667 + 3.666666667 = 0.000000000 0.000000000 + x = 16.045075396 + 3.666666667 x = 16.045075396 + 3.666666667 Combine like terms: 16.045075396 + 3.666666667 = 19.711742063 x = 19.711742063 Simplifying x = 19.711742063

Subproblem 2

x + -3.666666667 = -16.045075396 Simplifying x + -3.666666667 = -16.045075396 Reorder the terms: -3.666666667 + x = -16.045075396 Solving -3.666666667 + x = -16.045075396 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.666666667' to each side of the equation. -3.666666667 + 3.666666667 + x = -16.045075396 + 3.666666667 Combine like terms: -3.666666667 + 3.666666667 = 0.000000000 0.000000000 + x = -16.045075396 + 3.666666667 x = -16.045075396 + 3.666666667 Combine like terms: -16.045075396 + 3.666666667 = -12.378408729 x = -12.378408729 Simplifying x = -12.378408729

Solution

The solution to the problem is based on the solutions from the subproblems. x = {19.711742063, -12.378408729}

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