maniacpokemon43 maniacpokemon43

22-01-2016
Mathematics

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What is the least common multiple of 10a^4 and 4a^2

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apologiabiology apologiabiology

22-01-2016

so factor
10a^2=2 times 5 times a times a
4a^2=2 times 2 times a time a
so it needs at leas 2 pairs of 2 and 1 5 and 2 a's
2 times 2 times 5 times a times a=20a^2
lcm=20a^2

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