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

User Joshrathke
by
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1 Answer

3 votes

Answer:


3x^2+23x-36

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.

User Nirmal Mangal
by
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