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b0ertIzzybuggaewil
JaySL
JaySL

The sum is 10s^2t-5st^2.  With two separate sections, it is a binomial, and since the sum of the powers of the variables is 2+1=3, it has a degree of 3.  B is the correct answer.

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  • Brainly User

Hey there

Given - 6s2t – 2st2
and 4s2t – 3st2

The sum is a binomial with a degree of 3. 

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