Question

z (5z² -80) ÷ 5z( z+4)​

Answer 1

Answer:

(z-4)

Step-by-step explanation:

z(5z²-80)/5z(z+4)= (5z²-80)/5(z+4)

• 5(z²-16)/5(z+4)=(z²-4²)/(z+4)
• (z+4)(z-4)/(z+4)     ∴  (a²-b²)=(a+b)(a-b)
• (z-4)