.3n^2-2.2n+8.4=0

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Solution for .3n^2-2.2n+8.4=0 equation:


Simplifying
0.3n2 + -2.2n + 8.4 = 0

Reorder the terms:
8.4 + -2.2n + 0.3n2 = 0

Solving
8.4 + -2.2n + 0.3n2 = 0

Solving for variable 'n'.

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

Divide each side by '0.3'.
28 + -7.333333333n + n2 = 0

Move the constant term to the right:

Add '-28' to each side of the equation.
28 + -7.333333333n + -28 + n2 = 0 + -28

Reorder the terms:
28 + -28 + -7.333333333n + n2 = 0 + -28

Combine like terms: 28 + -28 = 0
0 + -7.333333333n + n2 = 0 + -28
-7.333333333n + n2 = 0 + -28

Combine like terms: 0 + -28 = -28
-7.333333333n + n2 = -28

The n term is -7.333333333n.  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.
-7.333333333n + 13.44444445 + n2 = -28 + 13.44444445

Reorder the terms:
13.44444445 + -7.333333333n + n2 = -28 + 13.44444445

Combine like terms: -28 + 13.44444445 = -14.55555555
13.44444445 + -7.333333333n + n2 = -14.55555555

Factor a perfect square on the left side:
(n + -3.666666667)(n + -3.666666667) = -14.55555555

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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