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9 October, 19:17

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

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  1. 9 October, 19:28
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    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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