朱罗纪公园:问题数学

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1.(1)x²y²-2xy+1;
(2)9-12t+4t²;
(3)y²+y+1/4;
(4)25m²-80m+64;
(5)x²/4+xy+y²;
(6)a²b²-4ab+4;
2.(1)(x+y)²+6(x+y)+9;
(2)a²-2a(b+c)+(b+c)²;
(3)4xy²-4x²y-y³;
(4)-a+2a²-a³;
要过程,详细一点!

1.(xy-1)^2
2.(2t-3)^2
3.(y=1/2)^2
4.(5m-8)^2
5.((ab-2)^@2

1.=(x+y+3)^2
2.=(a-b-c)^2
3.=y(2x-y)^2
4.=-a(a-1)^2
1.(xy-1)^2
2.(2t-3)^2
3.(y=1/2)^2
4.(5m-8)^2
5.((ab-2)^@2

1.=(x+y+3)^2
2.=(a-b-c)^2
3.=y(2x-y)^2
4.=-a(a-1)^2
1.(xy-1)^2
2.(2t-3)^2
3.(y=1/2)^2
4.(5m-8)^2
5.((ab-2)^@2

1.=(x+y+3)^2
2.=(a-b-c)^2
3.=y(2x-y)^2
4.=-a(a-1)^2

1.(xy-1)^2
2.(2t-3)^2
3.(y=1/2)^2
4.(5m-8)^2
5.((ab-2)^@2

1.=(x+y+3)^2
2.=(a-b-c)^2
3.=y(2x-y)^2
4.=-a(a-1)^2