因式分解:(x2+2x+1)-y2=______.
因式分解:(x2+2x+1)-y2=______.
因式分解:1-x2+4xy-4y2=______.
因式分解(x2+2x+1)-y2
已知实数x、y满足(x2+y2)(x2+y2-1)=2,则x2+y2的值为______.
将下列式子因式分解:x-x2-y+y2=______.
因式分解:9x2-y2-4y-4=______.
因式分解:-3x2+6xy-3y2=______.
已知:(x2+y2+1)2-4=0,则x2+y2=______.
(选做题)已知x+2y=1,则x2+y2的最小值是______.
已知x2+4x+y2-2y+5=0,则x2+y2=______.
2x2+xy-3y2+x+4y-1因式分解
3x2+(-3/2x+1/3y2)(2x-3y)因式分解步骤