1.24xy^4+2x^3y^2-2x^5 2.4x^4y^2-5x^2y^2-9y^2 3.24x^2y-30xy-75y 4.10(y+2)^2-29(y+2)+101.24xy^4+2x^3y^2-2x^5 2.4x^4y^2-5x^2y^2-9y^2 3.24x^2y-30xy-75y 4.10(y+2)^2-29(y+2)+10
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/09 09:10:05
1.24xy^4+2x^3y^2-2x^5 2.4x^4y^2-5x^2y^2-9y^2 3.24x^2y-30xy-75y 4.10(y+2)^2-29(y+2)+10
1.24xy^4+2x^3y^2-2x^5
2.4x^4y^2-5x^2y^2-9y^2
3.24x^2y-30xy-75y
4.10(y+2)^2-29(y+2)+10
(1).24xy^4+2x^3y^2-2x^5
=2x(12y^4+x^2y^2-x^4)
=-2x(x^4-x^2y^2-12y^4)
=-2x(x^2+3y^2)(x^2-4y^2)
=-2x(x^2+3y^2)(x+2y)(x-2y)
(2).4x^4y^2-5x^2y^2-9y^2
=y^2(4x^4-5x^2-9)
=y^2(4x^2-9)(x^2+1)
=y^2(2x-3)(2x+3)(x^2+1)
(3).24x^2y-30xy-75y
=3y(8x^2-10x-25)
=3y(2x-5)(4x+5)
(4).10(y+2)^2-29(y+2)+10
=[2(y+2)-5][5(y+2)-2]
=(2y+4-5)(5y+10-2)
=(2y-1)(5y+8)
因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y)
因式分解 x-xy+3y-3x 2x+xy-y-4x+5y-6
化简:3x^2-[5xy-(x^y-3xy)+4x^2y-8xy]
(-3x^y+2xy)-( )=4x^+xy
化简2(x²y+xy)-3(x²y-xy)-4x²y
xy-2{xy-[3x^2y-(4xy^2+0.5xy)]+4x^2y}+6xy^2
(X-3xy+4xy-y)-[-2x-2(xy-3/2xy)-y]+6xy的过程
x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2
5x^3y*(-3y)^2+(-6xy)^2*(-xy)+xy^3*(-4x^2)
3(x^2y+xy)-4(xy-2x^2y)-(-xy)
当x-y=2xy时,求4x-3xy-4y/xy
XY(XY+3)+(XY+4)+4(X+Y+1)-(X+Y+2)
3(x平方y+xy)-4(xy-2x平方y)-(xy)
化简:2x²y+{2xy-[3x²y-2(-3x²y+2xy)]-4xy}化简:2x²y+{2xy-[3x²y-2(-3x²y+2xy)]-4xy}
-4x^2×(二分之一xy-y^2)-3x×(xy^2-2x^2y)
已知x-y=4xy,求2x+3xy-2y/x-2xy-y的值
x-y=4xy,试求2x+3xy-2y/x-2xy-y
已知x-y=4xy,求x-2xy-y分之2x+3xy-2y的值!