Question

Y = (x + 9)(x-4)

Now we need to multiply our binomials​

Answer 1

x^2 + 5x - 36

Explanation:

Hello!

For this equation, we are going to multiply both binomials using FOIL.

FOIL stands for:

First

Outside/Outer

Inside/Inner

Last

This tells you the order in which you multiply two binomials in parentheses.

Let's get started!

First: x * x = x^2

Outside: x * -4 = -4x

Inside: 9 * x = 9x

Last: 9 * -4 = -36

x^2 - 4x + 9x - 36

These problems usually involve combining like terms, which is what we have to do here: -4x + 9x = 5x

And there you have it!

x^2 + 5x - 36

If you have any questions, just comment!

Hope I helped!

-Mary :)

Answer 2

`x^(2)`+5x-36

Explanation:

To multiply binomials there are 2 ways. F.O.I.L., or the box method.

I will use the box method, and I hope it helps you!

After looking at the picture, this is not the answer quite yet.

`x^(2)`
`+9x`
`-4x\\`
`-36`

Subtract 4x from 9x.

9x-4x=5x

So, the answer will be
`x^(2)`+5x-36