Answer:
z=(-3/2, -1/2) (Or z=(-1.5,-0.5) if they want decimals instead of fractions)
Step-by-step explanation:
7z²+8z+3-3z²=0
4z²+8z+3=0
(2z+3)(2z+1)=0
7z^2 + 8z + 3 = 3z^2
4z^2 + 8z + 3 = 0
(2z + 3)(2z + 1) = 0
2z + 3 = 0
z = -3/2
2z + 1 = 0
z = -1/2
