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Option A:

Solution:

Given expression .

To find the product of the above expression:

First multiply first two factors with each term.

Using exponent rule:

Now multiply these two factors with each term.

Using exponent rule:

Hence option A is the correct answer.

answer: i don't understand. what are the options

step-by-step explanation:

51

step-by-step explanation:

73-22=51 the   mass number minus the amount of protons gives you the amount of neutrons