作业帮(8xy- x2+y2)-(x2-y2+8xy) 2是平方
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(8xy- x2+y2)-(x2-y2+8xy) 2是平方
(8xy- x2+y2)-(x2-y2+8xy) 2是平方
(8xy- x2+y2)-(x2-y2+8xy) 2是平方
(8xy- x2+y2)-(x2-y2+8xy)
=8xy- x2+y2-x2+y2-8xy
=-2x2+2y2
(x2+xy+y2)-4xy(x2+y2)
x2-2xy-8y2因式分解
(x2+2xy+y2)( x2-xy+y2)2 化简
(x2-2xy+y2)-(x2+2xy+y2)=什么
( x2+xy+y2) ( x2+xy+2y2)-12y4
(x2+xy+y2)-4xy(x2+y2)因式分解
因式分解x2+xy-3y2
(x-y)(x2+xy+y2)
(x+y)(x2-xy+y2)
X2+3xy+y2因式分解
x2-2xy+y2-9
(8xy- x2+y2)-(x2-y2+8xy) 2是平方
(x2+y2)(x2-xy+y2)-2x2y2因式分解
分式分解：4y2-x2/-x2-4y2+4xy
x2+xy+y2=19求x2+y2最小值
x2-y2=xy,xy不等于0求x2/y2=y2/x2
求证:(x2-xy+y2)3+(x2+xy+y2)3能被2x2+2y2整除
若X2+xy-2y2=0,则（x2+3xy+y2)/x2+y2=?