百度作业网初二数学【【关于分式约分】】.追加====
来源：学生作业帮 编辑：百度作业网作业帮 分类：数学作业 时间：2024/07/31 17:05:07
初二数学【【关于分式约分】】.追加====
(1）1+2x/4x²+4x+1
(2)x+xy/y²-1
(3)4x-x²/16-x²
(4)x²-y²/3x²+6xy+3y²
(1）1+2x/4x²+4x+1
(2)x+xy/y²-1
(3)4x-x²/16-x²
(4)x²-y²/3x²+6xy+3y²
(1）1+2x/4x²+4x+1
=(1+2X)/(1+2x)^2
=1/(2x+1)
(2)x+xy/y²-1
=x(1+y)/(y+1)(y-1)
=x/(y-1)
(3)4x-x²/16-x²
=x(4-x)/(4+x)(4-x)
=x/(x+4)
(4)x²-y²/3x²+6xy+3y²
=(x+y)(x-y)/3(x+y)^2
=(x-y)/(x+y)
=(1+2X)/(1+2x)^2
=1/(2x+1)
(2)x+xy/y²-1
=x(1+y)/(y+1)(y-1)
=x/(y-1)
(3)4x-x²/16-x²
=x(4-x)/(4+x)(4-x)
=x/(x+4)
(4)x²-y²/3x²+6xy+3y²
=(x+y)(x-y)/3(x+y)^2
=(x-y)/(x+y)