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Please explain!!! find the lcm of the set of polynomials 16ab^3,5b^2,a^2,20ac
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For an explanation using numbers see http://www.khanacademy.org/math/arithmetic/factors-multiples/v/least-common-multiple--lcm the 2nd half (last few minutes) are the way to do this problem.
thanks!
using the idea in the video, break up each into "prime factors" 16 a b^3 --> 2^4 a b^3 5 b^2 --> 5 b^2 so far: 2^4 5 a b^3 a^2 ---> a^2 so far: 2^4 5 a^2 b^3 20 a c ----> 2^2 5 a c so far: 2^4 5 a^2 b^3 c final answer is 2^4 5 a^2 b^3 c or 80 a^2 b^3 c
that helps a lot..great explanation! thank you so much!
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