SOLUTION: the instructions say to multiply and simplify by factoring. but i don't know how to do that. can you explain it to me? sqrt20 * sqrt40

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Question 430320: the instructions say to multiply and simplify by factoring.
but i don't know how to do that. can you explain it to me?
sqrt20 * sqrt40

Answer by jorel1380(3719)   (Show Source): You can put this solution on YOUR website!
If you are using square roots, then sqrt20 times sqrt40 is the equivalent of sqrt(20X40), equals sqrt(800).
sqrt(800)=sqrt(400)X sqrt(2)
"""""""=20sqrt(2)
which is its' simplest form.

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