几道简单的化简分式的题目,要快,答完立刻给分填空：⑴x+1/x+2=2x+2/( )=( )/3x+6=x^2+x/( )=( )/2x^3+4x^2判断是否是最简分式,不是的请化简⑵x+16/2x+16⑶x^2-4/4-2x化简⑷9x-9/4-4x⑸x^2-1/x^2+x-2⑹x^2-4x+4/2x-4⑺3x^2-9x-12/x^2+2x+1⑻x^2-7x+12/-x^2+9x-20⑼xy-x-y+1/y^2-2y+1[需过程]
问题描述：
几道简单的化简分式的题目,要快,答完立刻给分
填空：
⑴x+1/x+2=2x+2/( )=( )/3x+6=x^2+x/( )=( )/2x^3+4x^2
判断是否是最简分式,不是的请化简
⑵x+16/2x+16
⑶x^2-4/4-2x
化简
⑷9x-9/4-4x
⑸x^2-1/x^2+x-2
⑹x^2-4x+4/2x-4
⑺3x^2-9x-12/x^2+2x+1
⑻x^2-7x+12/-x^2+9x-20
⑼xy-x-y+1/y^2-2y+1
[需过程]
答
⑴x+1/x+2=2x+2/( 2x+4 )=( 3x+3 )/3x+6=x^2+x/( x^2+2x )=( 2x^3+2x^2 )/2x^3+4x^2 判断是否是最简分式,不是的请化简 ⑵x+16/2x+16,是最简分式⑶x^2-4/4-2x =(x+2)(x-2)/2(2-x)=-(x+2)/2化简 ⑷9x-9/4-4x =9(x-1)/4...