Answer:
I and IV
Step-by-step explanation:
Right answer is not included in the options!
The right answer is I and IV
Because when you expand them, they both equal 10a+1
I. 5(2(a+1)) = 10(a+1) = 10a+10
IV. 2(5a+5) = 10a+10
Hence, I and IV others will give you high degree polynomial, which cannot equal to these!
Hope this helps!
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