很着急,(xy)^-1a^^x^-a^^y^3x^+6xy+3y^(x-y)^+4xy4a^-3b(4a-3b)^是2次

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/07/14 08:46:49

很着急,
(xy)^-1
a^^x^-a^^y^
3x^+6xy+3y^
(x-y)^+4xy
4a^-3b(4a-3b)
^是2次方的意思,^^是四次方的意思.

(xy)^2-1
=(xy+1)(xy-1)
a^4x^2-a^4y^2
=a^4(x^2-y^2)
=a^4(x+y)(x-y)
3x^2+6xy+3y^ 2
=3(x^2+2xy+y^2)
=3(x+y)^2
(x-y)^2+4xy
=x^2-2xy+y^2+4xy
=x^2+2xy+y^2
=(x+y)^2
4a^2-3b(4a-3b)
=4a^2-12ab+9b^2
=(2a-3b)^2

A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²+3x-y,若x= 设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²-3x-y,若x 设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²+3x-y.若x 分解因式1.2a(x-y)-3b(y-x)2.-x^y-2xy+35y3.a^(x-y)-4b^(x-y)若|a+2|+ （1）.设A=2X²-3Xy+y²+X-3y,B=4X²-6xy+2y²+4X- 3a-3b/10ab*25a^b3/a^-b^= x^-4y^/x^+2xy+y^/x+2y/2x^+2xy 设A=2x-3xy+y+x-3y,B=4x-6xy+2y+4x-y,若|x-3a|+（y+3）=0,且B-2A=a.求A 1.设A=2x²-3xy+y²+x-3y,B=4x²-6xy+2y²+4x-y, 设A=2x²-3xy+y²+x-3y ,B=4x²-6xy+2y²+4x-y , 设A=2X²-3xy+y²-x+2y,B=4x²-6xy+2y²-3x-y,若| 设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²+3x-y 若| 设A=2x²-3xy+y²-x+2y,B=4x²-6xy+2y²-3x-y,若│