Mark M. answered • 04/06/17
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(√a - 3√b)(9√a - √b)
9√a√a - √a√b - 27√a√b + 3√b√b FOIL
9a - √ab - 27√ab + 3b
9a - 28√ab + 3b
Lauren W.
asked • 04/06/17(Sqrt a - 3 sqrt b) (9 sqrt a - sqrt b)
(Sqrt a - 3 sqrt b) (9 sqrt a - sqrt b)
#Multiply the radical expressions.
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