(1)已知x+y=a,求(x+y)³(2x+2y)³(3x+3y)³
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(1)已知x+y=a,求(x+y)³(2x+2y)³(3x+3y)³
(1)已知x+y=a,求(x+y)³(2x+2y)³(3x+3y)³
(1)已知x+y=a,求(x+y)³(2x+2y)³(3x+3y)³
您好:
(x+y)³(2x+2y)³(3x+3y)³
=(x+y)³*4(x+2)³*27(x+y)³
=108(x+y)³
=108a³
不明白,可以追问
如有帮助,记得采纳,谢谢
祝学习进步!
好像是216a^9
=(a^3)(8a^3)(27a^3)
=216a^9
(x+y)³(2x+2y)³(3x+3y)³=
a^3*8a^3*27a^3
=216a^9