Question

Find the product of the sum and difference. (Please try to answer all of them If not it's OK!)

Answer 1

`16 {x}^(2) - 9`

Explanation:

Use the F.O.I.L. method

Answer 2

1)
`81c^(2)`-1

2)
`16x^(2)`-9

3)
`-4y^(2)`+25

4)
`-w^(2)`+16

Explanation: