>
数学
>
a²-4/a²-4a+3·a-3/a²+3a+2求解答这道初二数学题
a²-4 a-3
——— · ————
a²-4a+3 a²+3a+2
人气:183 ℃ 时间:2020-03-30 14:41:35
解答
原式=(a+2)(a-2)(a-3)/(a-3)(a-1)(a+2)(a+1)=a-2/(a+1)(a-1)
推荐
(3a-4)(3a+4)-4a(2分之3a+1)-3a²,其中a=-3
化简:4a²-[a²+(4a²-2a)-2(a²-3a)] 答得好,分高啊
4a²+3a=1 a能解出来吗
(4a²-3a)+(2+4a-a²)-(2a²+a-1),其中a=-2
[(4a²-4a)/(a²2a+1)]÷[a+1/(a-1)-(a-1)/(a+1)]×[1/(3a+3)]
稀硝酸和稀硫酸液态混合酸中,存在的阴离子主要是(),这是因为混合酸中不仅存在两酸的电离平衡,而且因硫酸的电离能力大于硝酸,又在无水条件下,混酸必然发生()反应(离子反应)造成.
哥白尼 生平事迹100字左右
it didn't survive until the end of the century
猜你喜欢
名词解释一下荚膜、菌膜团、粘膜、鞭毛、周生鞭毛、端生鞭毛、双生鞭毛、单生鞭毛
若多项式(2mx^2-x^2+3x+1)-(5x^2-4y^2+3x)的值与x无关求2m^2-[3m^2+(4m-5)+m]的值
有一包糖果平均分给3个人,4个人,5个人能正好分完,这包糖果至少有多少颗?
Baby,I want you to remember that my heart will always have your location.I will always love you,
What are___ teachers doing? They are having a meeting. A.this/B.that/c.those选哪个?
帮忙啊!几道初一科学题!
her lifestyle is the same as____,but _____is different.
Columbus was one of the great--------- (explore) 空里填什么 还有
© 2025 79432.Com All Rights Reserved.
电脑版
|
手机版