3x^2=-77+18x

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Solution for 3x^2=-77+18x equation:


Simplifying
3x2 = -77 + 18x

Solving
3x2 = -77 + 18x

Solving for variable 'x'.

Reorder the terms:
77 + -18x + 3x2 = -77 + 18x + 77 + -18x

Reorder the terms:
77 + -18x + 3x2 = -77 + 77 + 18x + -18x

Combine like terms: -77 + 77 = 0
77 + -18x + 3x2 = 0 + 18x + -18x
77 + -18x + 3x2 = 18x + -18x

Combine like terms: 18x + -18x = 0
77 + -18x + 3x2 = 0

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

Divide each side by '3'.
25.66666667 + -6x + x2 = 0

Move the constant term to the right:

Add '-25.66666667' to each side of the equation.
25.66666667 + -6x + -25.66666667 + x2 = 0 + -25.66666667

Reorder the terms:
25.66666667 + -25.66666667 + -6x + x2 = 0 + -25.66666667

Combine like terms: 25.66666667 + -25.66666667 = 0.00000000
0.00000000 + -6x + x2 = 0 + -25.66666667
-6x + x2 = 0 + -25.66666667

Combine like terms: 0 + -25.66666667 = -25.66666667
-6x + x2 = -25.66666667

The x term is -6x.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6x + 9 + x2 = -25.66666667 + 9

Reorder the terms:
9 + -6x + x2 = -25.66666667 + 9

Combine like terms: -25.66666667 + 9 = -16.66666667
9 + -6x + x2 = -16.66666667

Factor a perfect square on the left side:
(x + -3)(x + -3) = -16.66666667

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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