已知X+Y=1,求(X+Y)^3(2X+2Y)^3(3X+3Y)^3的值.
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已知X+Y=1,求(X+Y)^3(2X+2Y)^3(3X+3Y)^3的值.
已知X+Y=1,求(X+Y)^3(2X+2Y)^3(3X+3Y)^3的值.
已知X+Y=1,求(X+Y)^3(2X+2Y)^3(3X+3Y)^3的值.
X+Y=1
(X+Y)^3(2X+2Y)^3(3X+3Y)^3=1*2^3 *3^3=216
(X+Y)^3(2X+2Y)^3(3X+3Y)^3
=(X+Y)^9*2^3*3^3
=1^9*8*27
=216
1*2^3*3^3=216