Question

Which of the following expressions are equivalent to 48a3-75a

Answer 1

48
`a^(3)` - 75a
= 3a(16
`a^(2)` -25)
= 3a(
`(4a)^(2)` -
`5^(2)` )
= 3a(4a + 5)(4a - 5)

Answer 2

You give us no choices. The one that represents the most common factors is

3a(16 a^2- 25) is one choice another could be
3a(4a - 5)(4a + 5)