SOLUTION: simplify: 5√9a³b³ + 4a√36ab³ - 2b√81a³b

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Question 149710: simplify:
5√9a³b³ + 4a√36ab³ - 2b√81a³b
Answer by checkley77(12844) About Me  (Show Source):
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5√9a³b³ + 4a√36ab³ - 2b√81a³b
5*3absqrtab+4*6absqrtab-2*9absqrtab
15ab+24ab-18ab(sqrtab)
21ab(sqrtab)