Question

(1+3p)(1-3p)

the answer is 1-9p²

How do i get this though?

Answer 1

Explanation:

`(a - b)(a + b) = {a}^(2) - {b}^(2)`

simplify the product and you get

`{1}^(2) - (3p {}) {}^(2)`

1 times any power automatically equals 1. So that equals

`1 - (3p) {}^(2)`

=

`1 - 9p {}^(2)`