Multiplying Binomials

[AbsentMinded]

Hello everyone! I have a problem where I have to multiply 2 binomials. Here it is:

I must multiply them using the FOIL method.

By doing this I got 65. But I'm not sure if I did something wrong.

What does everyone think?

Thank you!

 

[srmichael]

Hello everyone! I have a problem where I have to multiply 2 binomials. Here it is: View attachment 1970

I must multiply them using the FOIL method.

By doing this I got 65. But I'm not sure if I did something wrong.

What does everyone think?

Thank you!

\(\displaystyle \displaystyle (3\sqrt{5}+\sqrt{5})(3\sqrt{5}+\sqrt{5})=9*5+3*5+3*5+5=45+15+15+5=80\)

 

[AbsentMinded]

Ha, Just before you posted this I reworked it and see what I did wrong. For the first part I had 6*5 instead of 9*5, I got 80 now, as well.


Thank you very much!