>
数学
>
x^2+6xy+9y^2分之2x+6y乘以x分之x^2-9y^2化简求值
人气:247 ℃ 时间:2020-04-07 12:11:41
解答
(2x+6y)/(x^2+6xy+9y^2) *(x^2-9y^2)/x
=2(x+3y)/(x+3y)^2* (x+3y)(x-3y)/x
=2(x-3y)/x
推荐
先化简,再求值2x-6y/x^2-9y^2,已知2x+6y+1=0
化简x²-9y²分之6y-2x=
x^2-9y^2-2x+6y
2x-6y/x^2-9y^2 已知2x+6y+1=0
分解因式x^2-6xy+9y^2-2x+6y=
人类破坏地球的事例
the difference between shares and bonds
i only like watching sport games () TV OK()for your answers(填入恰当的词)急!
猜你喜欢
在△ABC中,若面积S△ABC=a2-(b-c)2,则cosA等于_.
春夜洛城闻笛 赏析题
the monkeys in the mountain live a happy live 对in the mountain划线部分提问
(y-x)(a-b-c)+(x-y)(b-a-c)
若方程(m-3)x^(2m^2-3m-7)-2x=5是一元二次方程,求(m-1)^2
甲乙二人从相距100千米的两地出发相向而行甲先出发1小时他们在乙出发4小时后相遇
(This part should be finished during the trip) A diary
填入一个字使与方框里的十个字凑成新字
© 2024 79432.Com All Rights Reserved.
电脑版
|
手机版