Solve the Equation $$z ^ { 2 } + ( z + 1 ) ^ { 2 } = 85$$

Solve the equation. $$z ^ { 2 } + ( z + 1 ) ^ { 2 } = 85$$

A) $z = 7 ; z = - 6$
B) $z = - 7 ; z = 6$
C) $z = 7 ; z = 6$
D) $z = 0 ; z = - 1$