数学题啊!帮下啦!各位帮回答下!
填空题(-5a³+3a²b-a)÷(-a)=(15x²y-12xy²)÷(3xy)=(-2/3m的4次方+0.4m²-1...
填空题
(-5a³+3a²b-a)÷(-a)=
(15x²y-12xy²)÷(3xy)=
(-2/3m的4次方+0.4m²-1/2m)÷(-3/2m)=
计算
(-6x³-3x²)÷(-3x²)
(0.75x²y-0.5x³y²+1/4x的4次方y³)÷(-1/2x²y)
{(x-y)²-(x+y)²+x(2xy-y)}÷(-2y)
(-24a³b²c+8a²b³-12a²b²)÷(-8a²b²)
帮下啦啊! 展开
(-5a³+3a²b-a)÷(-a)=
(15x²y-12xy²)÷(3xy)=
(-2/3m的4次方+0.4m²-1/2m)÷(-3/2m)=
计算
(-6x³-3x²)÷(-3x²)
(0.75x²y-0.5x³y²+1/4x的4次方y³)÷(-1/2x²y)
{(x-y)²-(x+y)²+x(2xy-y)}÷(-2y)
(-24a³b²c+8a²b³-12a²b²)÷(-8a²b²)
帮下啦啊! 展开
4个回答
展开全部
填空题
(1)=-a(5a²-3ab=1)=5a²-3ab+1
(2)=3xy(5x-4y)÷3xy=5x-4y
计算
(1)原式=-3x²(2x+1)÷(-3x)=2x+1
(3)原式=(x²-2xy+y²-x²-2xy-y²+2x²y-xy)÷(-2y)=(-5xy+2x²y)÷(-2y)=-xy(5-2x)÷(-2y)=2.5x-x²
(4)原式=-4a²b²(ac-2b+3)÷(-8a²b²)=0.5ac-b=1.5
有分数的不知字母是分子还是分母上的哦……
(1)=-a(5a²-3ab=1)=5a²-3ab+1
(2)=3xy(5x-4y)÷3xy=5x-4y
计算
(1)原式=-3x²(2x+1)÷(-3x)=2x+1
(3)原式=(x²-2xy+y²-x²-2xy-y²+2x²y-xy)÷(-2y)=(-5xy+2x²y)÷(-2y)=-xy(5-2x)÷(-2y)=2.5x-x²
(4)原式=-4a²b²(ac-2b+3)÷(-8a²b²)=0.5ac-b=1.5
有分数的不知字母是分子还是分母上的哦……
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
填空
1、(-5a³+3a²b-a)÷(-a)=5a²-3ab+1
2、(15x²y-12xy²)÷(3xy)=5x-4y
3、(-2/3m的4次方+0.4m²-1/2m)÷(-3/2m)=4/9m³-4/15m+1/3
计算
1、(-6x³-3x²)÷(-3x²)=2x+1
2、(0.75x²y-0.5x³y²+1/4x的4次方y³)÷(-1/2x²y)=-3/2+xy-1/2x²y²
3、{(x-y)²-(x+y)²+x(2xy-y)}÷(-2y)=[(x-y+x+y)(x-y-x-y)+x(2xy-y)]÷(-2y)
=[-4xy+2x²y-xy]÷(-2y)
=2.5x-x²
4、(-24a³b²c+8a²b³-12a²b²)÷(-8a²b²)=3ac-b+1.5
1、(-5a³+3a²b-a)÷(-a)=5a²-3ab+1
2、(15x²y-12xy²)÷(3xy)=5x-4y
3、(-2/3m的4次方+0.4m²-1/2m)÷(-3/2m)=4/9m³-4/15m+1/3
计算
1、(-6x³-3x²)÷(-3x²)=2x+1
2、(0.75x²y-0.5x³y²+1/4x的4次方y³)÷(-1/2x²y)=-3/2+xy-1/2x²y²
3、{(x-y)²-(x+y)²+x(2xy-y)}÷(-2y)=[(x-y+x+y)(x-y-x-y)+x(2xy-y)]÷(-2y)
=[-4xy+2x²y-xy]÷(-2y)
=2.5x-x²
4、(-24a³b²c+8a²b³-12a²b²)÷(-8a²b²)=3ac-b+1.5
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
(-5a³+3a²b-a)÷(-a)=5a²-3ab+1
(15x²y-12xy²)÷(3xy)=5X-4y
(-2/3m的4次方+0.4m²-1/2m)÷(-3/2m)=
m3-6/10m+3/4
(-6x³-3x²)÷(-3x²)
=-3x²(2x+1)÷(-3x²)=2x+1
{(x-y)²-(x+y)²+x(2xy-y)}÷(-2y)
=(x²-2xy+y²-x²-2xy-y²+2x²y-xy)÷(-2y)=-(x²-2/5x)
(-24a³b²c+8a²b³-12a²b²)÷(-8a²b²)
=-4a²b²(6ac-2b+3))÷(-8a²b²)
=3ac-b+2/3
(15x²y-12xy²)÷(3xy)=5X-4y
(-2/3m的4次方+0.4m²-1/2m)÷(-3/2m)=
m3-6/10m+3/4
(-6x³-3x²)÷(-3x²)
=-3x²(2x+1)÷(-3x²)=2x+1
{(x-y)²-(x+y)²+x(2xy-y)}÷(-2y)
=(x²-2xy+y²-x²-2xy-y²+2x²y-xy)÷(-2y)=-(x²-2/5x)
(-24a³b²c+8a²b³-12a²b²)÷(-8a²b²)
=-4a²b²(6ac-2b+3))÷(-8a²b²)
=3ac-b+2/3
本回答被提问者采纳
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询