Z^2+2Z+8=

Solution for Z^2+2Z+8= equation:

Simplifying
Z2 + 2Z + 8 = 0

Reorder the terms:
8 + 2Z + Z2 = 0

Solving
8 + 2Z + Z2 = 0

Solving for variable 'Z'.

Begin completing the square.

Move the constant term to the right:

Add '-8' to each side of the equation.
8 + 2Z + -8 + Z2 = 0 + -8

Reorder the terms:
8 + -8 + 2Z + Z2 = 0 + -8

Combine like terms: 8 + -8 = 0
0 + 2Z + Z2 = 0 + -8
2Z + Z2 = 0 + -8

Combine like terms: 0 + -8 = -8
2Z + Z2 = -8

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

Add '1' to each side of the equation.
2Z + 1 + Z2 = -8 + 1

Reorder the terms:
1 + 2Z + Z2 = -8 + 1

Combine like terms: -8 + 1 = -7
1 + 2Z + Z2 = -7

Factor a perfect square on the left side:
(Z + 1)(Z + 1) = -7

Can't calculate square root of the right side.

The solution to this equation could not be determined.