Which expressions represent the sum of exactly two terms? Choose 2 answers:

Choose 2 answers:

(Choice A)

A

xyxyx, y

(Choice B)

B

m^4+6nm

4

+6nm, start superscript, 4, end superscript, plus, 6, n

(Choice C)

C

3+7s+t3+7s+t3, plus, 7, s, plus, t

(Choice D)

D

a+ca+ca, plus, c

answer: 4

step-by-step explanation:

answer by yourhope:

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answer: d.) the total number of protons and neutrons is 15

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