a) -0,6a^3b(-2a^2b^3)^3 = -0,6a^3b(-8a^6b^9) = 4,8a^9b^10.
b) 0,8xy^4(-6xy^4)^2 = 0,8xy^4(36x^2y^8) = 28,8x^3y^12.
c) -a^4b^7(-3ab)^2 = -a^4b^7(9a^2b^2) = -9a^6b^9.
g) (7x^2y^2)(-7y^11) = -49x^2y^13.
d) (-ac)^6(-2a^2c)^5 = a^6c^6(-32a^10c^5) = -32a^16c^11.
e) 3p^2q(-1/3p^3q)^2 = 3p^2q(1/9p^6q^2) = p^8q^3.
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