A few days ago
How do you multiply a polynomial?
Example: (n+7)(n+5)
Top 4 Answers
A few days ago
Favorite Answer
FOIL
0
A few days ago
FOIL- first, outer, inner, last.
first…n x n= n^2
outer….n x 5= 5n
inner…..n x 7= 7n
last……7 x 5= 35
so the answer is n^2 + 5n + 7n+ 35 = n^2 + 12n + 35
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A few days ago
(n+7)(n+5)
use what is called “foil”
n it the first one we start with:
Take n x n = n^2 ( That’s supposed to be n squared)
Take n x 5 = 5n
Then do second part:: 7x n= 7n
7 x 5= 35
Put it all together:
n^2 + 5n + 7n + 35
0
A few days ago
foil.
first.outside.inside.last.
multiply the first numbers in parentheses.
this would be n*n
Outside: then do the outside numbers
n*5
Inside:the ones that are next to each other, inside
7*n
Last: the last of the numbers in parentheses
7*5
multiply, add like things. and boom
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