z^2+6z+9=-17

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Solution for z^2+6z+9=-17 equation:


Simplifying
z2 + 6z + 9 = -17

Reorder the terms:
9 + 6z + z2 = -17

Solving
9 + 6z + z2 = -17

Solving for variable 'z'.

Reorder the terms:
9 + 17 + 6z + z2 = -17 + 17

Combine like terms: 9 + 17 = 26
26 + 6z + z2 = -17 + 17

Combine like terms: -17 + 17 = 0
26 + 6z + z2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-26' to each side of the equation.
26 + 6z + -26 + z2 = 0 + -26

Reorder the terms:
26 + -26 + 6z + z2 = 0 + -26

Combine like terms: 26 + -26 = 0
0 + 6z + z2 = 0 + -26
6z + z2 = 0 + -26

Combine like terms: 0 + -26 = -26
6z + z2 = -26

The z term is 6z.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6z + 9 + z2 = -26 + 9

Reorder the terms:
9 + 6z + z2 = -26 + 9

Combine like terms: -26 + 9 = -17
9 + 6z + z2 = -17

Factor a perfect square on the left side:
(z + 3)(z + 3) = -17

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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