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2014-05-04T16:51:27-03:00
1 )



\boxed{(2xy^2)^3~\to~2^3.x^3.y^6~\to~8x^2y^6}

b )

\boxed{(3xy^2)(2x^2y^3)~\to~6x^3y^5}

c )

\boxed{(5ab^2)^2(a^2b)^3~\to~(25a^2b^4)(a^6b^3)~\to~25a^8b^7}
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