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(√-15)(√-6), with steps please. Thank you.
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(√-15)(√-6), with steps please. Thank you.

User David Tesar
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If you mult. these two radicals together, you'll combine the radicands -15 and -6 into one amount: 90, and this 90 is under the radical: sqrt(90).

Now, 9 is a perfect square, tho' 10 is not. Thus, sqrt(90) = 3sqrt(10) (ANSWER)
User Huguenot
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