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-4
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 02:15:26
![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-4](/uploads/image/z/9298953-9-3.jpg?t=%E5%87%A0%E9%81%93%E7%AE%80%E5%8D%95%E7%9A%84%E5%8C%96%E7%AE%80%E5%88%86%E5%BC%8F%E7%9A%84%E9%A2%98%E7%9B%AE%2C%E8%A6%81%E5%BF%AB%2C%E7%AD%94%E5%AE%8C%E7%AB%8B%E5%88%BB%E7%BB%99%E5%88%86%E5%A1%AB%E7%A9%BA%EF%BC%9A%E2%91%B4x%2B1%2Fx%2B2%3D2x%2B2%2F%28++%29%3D%28++%29%2F3x%2B6%3Dx%5E2%2Bx%2F%28++%29%3D%28++%29%2F2x%5E3%2B4x%5E2%E5%88%A4%E6%96%AD%E6%98%AF%E5%90%A6%E6%98%AF%E6%9C%80%E7%AE%80%E5%88%86%E5%BC%8F%2C%E4%B8%8D%E6%98%AF%E7%9A%84%E8%AF%B7%E5%8C%96%E7%AE%80%E2%91%B5x%2B16%2F2x%2B16%E2%91%B6x%5E2-4%2F4-2x%E5%8C%96%E7%AE%80%E2%91%B79x-9%2F4-4x%E2%91%B8x%5E2-1%2Fx%5E2%2Bx-2%E2%91%B9x%5E2-4x%2B4%2F2x-4)
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-4
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]
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-4
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(1-x)
=9(x-1)/[-4(x-1)]
=-9/4
⑸x^2-1/x^2+x-2
=(x+1)(x-1)/(x+2)(x-1)
=(x+1)/(x+2)
⑹x^2-4x+4/2x-4
=(x-2)^2/2(x-2)
=(x-2)/2
⑺3x^2-9x-12/x^2+2x+1
=3(x-4)(x+1)/(x+1)^2
=(3x-12)/(x+1)
⑻x^2-7x+12/-x^2+9x-20
=(x-3)(x-4)/[-(x-4)(x-5)]
=(x-3)/(5-x)
⑼xy-x-y+1/y^2-2y+1
=(x-1)(y-1)/(y-1)^2
=(x-1)/(y-1)