8u^2+8u+7=0

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Solution for 8u^2+8u+7=0 equation:


Simplifying
8u2 + 8u + 7 = 0

Reorder the terms:
7 + 8u + 8u2 = 0

Solving
7 + 8u + 8u2 = 0

Solving for variable 'u'.

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

Divide each side by '8'.
0.875 + u + u2 = 0

Move the constant term to the right:

Add '-0.875' to each side of the equation.
0.875 + u + -0.875 + u2 = 0 + -0.875

Reorder the terms:
0.875 + -0.875 + u + u2 = 0 + -0.875

Combine like terms: 0.875 + -0.875 = 0.000
0.000 + u + u2 = 0 + -0.875
u + u2 = 0 + -0.875

Combine like terms: 0 + -0.875 = -0.875
u + u2 = -0.875

The u term is u.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + u2 = -0.875 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + u2 = -0.875 + 0.25

Combine like terms: -0.875 + 0.25 = -0.625
1.25 + u2 = -0.625

Factor a perfect square on the left side:
(u + 0.5)(u + 0.5) = -0.625

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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