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Which is true about the polynomial 18r2s + 6r – 7s2?

It is a binomial with a degree of 2.
It is a binomial with a degree of 3.
It is a trinomial with a degree of 2.
It is a trinomial with a degree of 3.

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kphung76127
It is a trinomial with a degree of 3.

It is a trinomial because there are 3 terms: 18r^2s, 6r, and -7s^2.
It has a degree of 3 because the first term has r^2+s^1 and 2+1=3

Answer: Choice D. It is a trinomial with a degree of 3

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