Question

Foil (x+9)(3x-4) I have been stuck for ever

Answer 1

Answer:

$3x^2+23x-36$

Step-by-step explanation:

The foil method is used when multiplying 2 binomials. One is (x+9) and another is (3x-4). The steps of FOIL are:

1. Multiply the first terms
2. Multiply the outer terms
3. Multiply the inner terms
4. Multiply the last terms
5. Combine like terms

Let's do the steps on our problem:

1. multiply x and 3x. So we have x * 3x = 3x^2

2. multiply x and -4. So we have x * -4 = -4x

3. Multiply 9 and 3x. So we have 27x

4. Multiply 9 and -4. So we have -36

Listing the terms, we have:  3x^2 -4x + 27x - 36

We combine like terms and have:  3x^2 + 23x - 36

That's our answer.