因式分解(1)4a²-4a+1 (2)4ab-2a²b (3)2am²-8a(4)x²-1 (5)(xy)²-1 (6)3x²+6xy+3y² (7)2a²+4ab+2b²
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因式分解(1)4a²-4a+1 (2)4ab-2a²b (3)2am²-8a(4)x²-1 (5)(xy)²-1 (6)3x²+6xy+3y² (7)2a²+4ab+2b²
因式分解(1)4a²-4a+1 (2)4ab-2a²b (3)2am²-8a
(4)x²-1 (5)(xy)²-1 (6)3x²+6xy+3y² (7)2a²+4ab+2b²
因式分解(1)4a²-4a+1 (2)4ab-2a²b (3)2am²-8a(4)x²-1 (5)(xy)²-1 (6)3x²+6xy+3y² (7)2a²+4ab+2b²
(1) (2a-1)^2
(2) 2ab(2-a)
(3) 2a(m^2-4)=2a(m-2)(m+2)
(4) (x-1)(x+1)
(5) (xy-1)(xy+1)
(6) 3(x+y)^2
(7) 2(a+b)^2
这题不难