Question

How do you find the product `(3t+12)(3t-12)`?

Answer 1

See a solution process below:

Explanation:

This is a special form:

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

Substituting `3t` for `a` and `12` for `b` gives:

`(3t + 12)(3t - 12) => (3t)^2 - 12^2 => 9t^2 - 144`