帮我算2道数学题(1)(xy^3n)^2+(xy^6)^n(2)(-3x^3)^2-[(2x)^2]^3_数学解答

帮我算2道数学题
(1)(xy^3n)^2+(xy^6)^n
(2)(-3x^3)^2-[(2x)^2]^3

人气：466 ℃　时间：2020-03-27 00:53:10

解答

(1)(xy^3n)^2+(xy^6)^n
=x^2y^6n+x^ny^6^n
=x^2y^6^n[1+x^(n-2)]
(2)(-3x^3)^2-[(2x)^2]^3
=9x^6-64x^6
=-55x^6