5n^2-10n+7=0

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Solution for 5n^2-10n+7=0 equation:


Simplifying
5n2 + -10n + 7 = 0

Reorder the terms:
7 + -10n + 5n2 = 0

Solving
7 + -10n + 5n2 = 0

Solving for variable 'n'.

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

Divide each side by '5'.
1.4 + -2n + n2 = 0

Move the constant term to the right:

Add '-1.4' to each side of the equation.
1.4 + -2n + -1.4 + n2 = 0 + -1.4

Reorder the terms:
1.4 + -1.4 + -2n + n2 = 0 + -1.4

Combine like terms: 1.4 + -1.4 = 0.0
0.0 + -2n + n2 = 0 + -1.4
-2n + n2 = 0 + -1.4

Combine like terms: 0 + -1.4 = -1.4
-2n + n2 = -1.4

The n term is -2n.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2n + 1 + n2 = -1.4 + 1

Reorder the terms:
1 + -2n + n2 = -1.4 + 1

Combine like terms: -1.4 + 1 = -0.4
1 + -2n + n2 = -0.4

Factor a perfect square on the left side:
(n + -1)(n + -1) = -0.4

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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