Question

Multiply (2z-4) with (2z+4)
PLEASE ANSWER THIS...​

Answer 1

Step-by-step explanation:

(2z-4) × (2z+4)

= (2z)² - 4². { by property a²-b² = (a+b)(a-b) }

= 4z² - 16

Answer 2

Answer:

4z²-16

Step-by-step explanation:

We have used the identity (a+b)(a-b)=a²-b²

here,a is 2z and b is 4

so,(2z)²-(4)²

=4z²-16