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What is the product of 3x(x2 + 4)? A=x2 + 3x + 4 B=3x3 + 4 C=3x3 + 12x D=3x2 + 12x
asked
Jul 9, 2017
Mathematics
high-school
2
answers
1
vote
6.6k
views
Which particle has a mass of approximately 1 atomic mass unit? A) an alpha particle B) a beta particle C) an electron D) a neutron
asked
Aug 1, 2016
Chemistry
high-school
1
answer
4
votes
128k
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