12x^2+77x+243=0

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Solution for 12x^2+77x+243=0 equation:


Simplifying
12x2 + 77x + 243 = 0

Reorder the terms:
243 + 77x + 12x2 = 0

Solving
243 + 77x + 12x2 = 0

Solving for variable 'x'.

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

Divide each side by '12'.
20.25 + 6.416666667x + x2 = 0

Move the constant term to the right:

Add '-20.25' to each side of the equation.
20.25 + 6.416666667x + -20.25 + x2 = 0 + -20.25

Reorder the terms:
20.25 + -20.25 + 6.416666667x + x2 = 0 + -20.25

Combine like terms: 20.25 + -20.25 = 0.00
0.00 + 6.416666667x + x2 = 0 + -20.25
6.416666667x + x2 = 0 + -20.25

Combine like terms: 0 + -20.25 = -20.25
6.416666667x + x2 = -20.25

The x term is 6.416666667x.  Take half its coefficient (3.208333334).
Square it (10.29340278) and add it to both sides.

Add '10.29340278' to each side of the equation.
6.416666667x + 10.29340278 + x2 = -20.25 + 10.29340278

Reorder the terms:
10.29340278 + 6.416666667x + x2 = -20.25 + 10.29340278

Combine like terms: -20.25 + 10.29340278 = -9.95659722
10.29340278 + 6.416666667x + x2 = -9.95659722

Factor a perfect square on the left side:
(x + 3.208333334)(x + 3.208333334) = -9.95659722

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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