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so would it be this for A 7a^3=5a^2b-13ab-4b?
yes assuming the = was a typo
yes , = means +
ys its +
so do you guys think thats correct descending order
yes. In theory we could order it according to the "b"s , but the a's have a higher power
ok so its correct. So for B I said the term is polynomial
is that correct
yes, but they also want the number of terms (things between the + or -)
yes, it is a 4 term polynomial
so they don't want the name but they want number?
I need help with degree part c
they want "4 term polynomial" the degree is the biggest exponent. easy to find, because we order the terms from biggest exponent to smallest
but doesnt 2 of them have 3 as degree?
5a^2b is 3 right? and 7a^3 is also 3
yes, we should count a^2 b as degree 3 but what we care about is the term with the biggest exponent. (in this case 3) it does not matter if there are more than one term with that degree.
so 7a^3 is the degree?
no. just 3 if we did not have 7a^3, the degree would still be 3 (because of the 5a^2b) and if we did not have either of those, the degree would be 2 (from -13ab)
so i just write 3 where it says state the degree of the polynomial
ok thanks again!