Question

Use suitable identity to get product:
1) (x3 - 3/8) (x3 + 1/4)

2) (p2 + 16) (p2 - 1/4)

3) (y - 7) (y + 12)

Thanks in anticipation.

Answer 1

I don't understand the instruction, why don't we just go ahead and do the problems
e.g.
#2
(p^2 + 16)(p^2 - 1/4)
= p^4 - (1/4)p^2 + 16p^2 - 4
= p^4 -(63/4)p^2 - 4

Answer 2

It is16

Answer 3

13'6"