7n^2=8n-10

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Solution for 7n^2=8n-10 equation:


Simplifying
7n2 = 8n + -10

Reorder the terms:
7n2 = -10 + 8n

Solving
7n2 = -10 + 8n

Solving for variable 'n'.

Reorder the terms:
10 + -8n + 7n2 = -10 + 8n + 10 + -8n

Reorder the terms:
10 + -8n + 7n2 = -10 + 10 + 8n + -8n

Combine like terms: -10 + 10 = 0
10 + -8n + 7n2 = 0 + 8n + -8n
10 + -8n + 7n2 = 8n + -8n

Combine like terms: 8n + -8n = 0
10 + -8n + 7n2 = 0

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

Divide each side by '7'.
1.428571429 + -1.142857143n + n2 = 0

Move the constant term to the right:

Add '-1.428571429' to each side of the equation.
1.428571429 + -1.142857143n + -1.428571429 + n2 = 0 + -1.428571429

Reorder the terms:
1.428571429 + -1.428571429 + -1.142857143n + n2 = 0 + -1.428571429

Combine like terms: 1.428571429 + -1.428571429 = 0.000000000
0.000000000 + -1.142857143n + n2 = 0 + -1.428571429
-1.142857143n + n2 = 0 + -1.428571429

Combine like terms: 0 + -1.428571429 = -1.428571429
-1.142857143n + n2 = -1.428571429

The n term is -1.142857143n.  Take half its coefficient (-0.5714285715).
Square it (0.3265306123) and add it to both sides.

Add '0.3265306123' to each side of the equation.
-1.142857143n + 0.3265306123 + n2 = -1.428571429 + 0.3265306123

Reorder the terms:
0.3265306123 + -1.142857143n + n2 = -1.428571429 + 0.3265306123

Combine like terms: -1.428571429 + 0.3265306123 = -1.1020408167
0.3265306123 + -1.142857143n + n2 = -1.1020408167

Factor a perfect square on the left side:
(n + -0.5714285715)(n + -0.5714285715) = -1.1020408167

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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