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Multiply. √32⋅√28⋅√3⋅√6 Enter your answer, in simplest radical form, in the box.

User DCR
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1 Answer

3 votes

Answer:

48*sqrt(7)

Explanation:

begin by factoring the radicals into prime factors.

32: 2 * 2 * 2 * 2 * 2

28: 2 * 2 * 7

3: 3

6:2 * 3

Now put them under a root sign

√(2*2*2*2*2*2*2*7*3*3*2 Group them together.

√2*2 * 2*2 *2*2 *2*2 * 7 * 3*3)

Now take them outside the root sign using these two rules.

  • For ever pair of equal factors (like 2*2) take 1 of the 2s outside the root sign and discard the other.
  • If there are an odd number of equal factors, leave the left over odd one under the root sign.

================================

  • There are 4 pairs of twos with no leftovers. 2 * 2 * 2 * 2 comes outside the root sign.
  • There are 2 threes. One comes outside the root sign and the other is discarded.
  • There is 1 seven. It stays under the root sign.

Answer

2*2*2*2*3*√7

48sqrt(7)

User Chris Nicola
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