将下列各式因式分解:(1)x2-4y2;(2)4(a-1)2+4(a-1)+1.
将下列各式因式分解:(1)4a2
将下列各式因式分解 (1)4(a-3)^2-(a+3)^2 (2)(a+b)^2-9a^2
把下列各式分解因式:(1)a2(x-y)2+2a(x-y)3+(x-y)4(2)(x2+y2)2-4x2y2.
因式分解:(x2+2x+1)-y2=______.
把下列各式因式分解:(1)-a2-1+2a=______;(2)2x2y-x3-xy2=______;(3)(x2+1)
把下列各式分解因式:(1)x2-y2-z2+2yz; (2)(x+y)2+4(x+y+1)
因式分解:x3+(y-1)x2-2xy-y2
把下列各式因式分解:(1)a∧4-1 (2)9(x-1)²-1 (3)(x+2)(x-2)+(8
2x2+xy-3y2+x+4y-1因式分解
因式分解:(1)(a+b)2+6(a+b)+9;(2)-2xy-x2-y2(3)(x2-2xy)2+2y2(x2-2xy
已知:x+y=1,xy=-3,求下列各式的值:(1)x2+y2; (2)x3+y3; (3)x5y+xy5.
已知:(x2+y2+1)2-4=0,则x2+y2=______.