Question

(4a - 3)(4a + 3) find the product

Answer 1

Using the FOIL method, we can find the product of (4a - 3)(4a + 3):

First:
`{4a* 4a = {16a}^(2)}`

Outer:
`{4a* 3 = 12a}`

Inner:
`{-3* 4a = -12a}`

Last:
`{-3* 3 = -9}`

Therefore, the product is:
`{{16a}^(2) - 9}`

Answer 2

The answer is:

16a² - 9

Work/explanation:

We will use FOIL to simplify this.

FOIL:

F = first

O = outside

I = inside

L = last

The first terms are
`\sf{4a}` and
`\sf{4a}`. Multiply them:

`\sf{16a^2}`

The outside terms are 4a and 3. Multiply them:

`\sf{12a}`

The inside terms are -3 and 4a. Multiply them:

`\sf{-12a}`

The last terms are -3 and 3. Multiply them:

`\sf{-9}`

`\sf{16a^2+12a-12a-9}`

Combine like terms

`\sf{16a^2-9}`

Hence, the answer is 16a² - 9.