把下列各式分解因式: (1)x^y^-2xy+1 (2)9-12t+4t^把下列各式分解因式:(1)x^y^-2xy+1 (2)9-12t+4t^(3)y^+y+1/4 (4)25m^-80m+64(5)x^/4+xy+y^ (6)a^b^-4ab+46个小题求解了,注:^为平方
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把下列各式分解因式: (1)x^y^-2xy+1 (2)9-12t+4t^把下列各式分解因式:(1)x^y^-2xy+1 (2)9-12t+4t^(3)y^+y+1/4 (4)25m^-80m+64(5)x^/4+xy+y^ (6)a^b^-4ab+46个小题求解了,注:^为平方
把下列各式分解因式: (1)x^y^-2xy+1 (2)9-12t+4t^
把下列各式分解因式:
(1)x^y^-2xy+1 (2)9-12t+4t^
(3)y^+y+1/4 (4)25m^-80m+64
(5)x^/4+xy+y^ (6)a^b^-4ab+4
6个小题求解了,注:^为平方
把下列各式分解因式: (1)x^y^-2xy+1 (2)9-12t+4t^把下列各式分解因式:(1)x^y^-2xy+1 (2)9-12t+4t^(3)y^+y+1/4 (4)25m^-80m+64(5)x^/4+xy+y^ (6)a^b^-4ab+46个小题求解了,注:^为平方
(1)x^y^-2xy+1=(xy-1)²
(2)9-12t+4t^=(3-2t)²
(3)y^+y+1/4=(y+1/2)²
(4)25m^-80m+64=(5m)²-2×5m×8+8²=(5m-8)²
(5)x^/4+xy+y^=(x/2+y)²
(6)a^b^-4ab+4=(ab-2)²
x^y^-2xy+1
=(xy-1)(xy-1)
9-12t+4t^
=(3-2t)(3-2t)
y^+y+1/4
=(y+1/2)(y+1/2)
25m^-80m+64
=(5-8m)(5-8m)
x^/4+xy+y^
=(x/2+y)(x/2+y)
a^b^-4ab+4
=(ab-2)(ab-2)