SOLUTION: Find each product? (x + 7)(x + 3) I got this far: x^2 + 21 Am I finished or is there more to it?

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Find each product? (x + 7)(x + 3) I got this far: x^2 + 21 Am I finished or is there more to it?      Log On


   

Question 18026: Find each product?
(x + 7)(x + 3)
I got this far: x^2 + 21 Am I finished or is there more to it?
Answer by tennis_math(7) About Me  (Show Source):
You can put this solution on YOUR website!
(x+7)(x+3) is a quadratic factored
you need to use the foil method
F-Firsts (x times x)
O-Outsides (x times 3)
I-Insides (7 times x)
L-Lasts (7 times 3)
x times x is x%5E2
x times 3 is 3x
7 times x is 7x
7 times 3 is 21
Now, you have to add them up, you get:
x%5E2%2B3x%2B7x%2B21
after combining like terms, you get:
x%5E2%2B10x%2B21