Answer:
z=−1 or z=−3
Step-by-step explanation:
Subtract 3z + 5 from both sides
z2+7z+8−(3z+5)=3z+5−(3z+5)
z2+4z+3=0
Factor left side of equation
(z+1)(z+3)=0
Set factors equal to 0
z+1=0 or z+3=0
