(1)x²y²-2xy+1 (2)9-12t+4t²(3)y²+y+1/4(4)25m²-80m+64 (5)
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(1)x²y²-2xy+1 (2)9-12t+4t²(3)y²+y+1/4(4)25m²-80m+64 (5)
(1)x²y²-2xy+1 (2)9-12t+4t²(3)y²+y+1/4(4)25m²-80m+64 (5)
(1)x²y²-2xy+1 (2)9-12t+4t²(3)y²+y+1/4(4)25m²-80m+64 (5)
(xy-1)平方 (3-2t)平方 (y+1/2)平方 (5m-8)平方