1z^2+4z+18=0

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Solution for 1z^2+4z+18=0 equation:


Simplifying
1z2 + 4z + 18 = 0

Reorder the terms:
18 + 4z + 1z2 = 0

Solving
18 + 4z + 1z2 = 0

Solving for variable 'z'.

Begin completing the square.

Move the constant term to the right:

Add '-18' to each side of the equation.
18 + 4z + -18 + z2 = 0 + -18

Reorder the terms:
18 + -18 + 4z + z2 = 0 + -18

Combine like terms: 18 + -18 = 0
0 + 4z + z2 = 0 + -18
4z + z2 = 0 + -18

Combine like terms: 0 + -18 = -18
4z + z2 = -18

The z term is 4z.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4z + 4 + z2 = -18 + 4

Reorder the terms:
4 + 4z + z2 = -18 + 4

Combine like terms: -18 + 4 = -14
4 + 4z + z2 = -14

Factor a perfect square on the left side:
(z + 2)(z + 2) = -14

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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