SOLUTION: (3 sqrt 2) * (-4 sqrt 10)

Question 200781: (3 sqrt 2) * (-4 sqrt 10)
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given expression.

Rearrange the terms.

Multiply 3 and -4 to get -12

Combine the roots using the identity

Multiply 2 and 10 to get 20

Factor 20 to get 4*5. Note: one of the factors must be a perfect square.

Break up the roots using the identity

Take the square root of 4 to get 2.

Multiply -12 and 2 to get -24

So
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