()3.Thesedayschildrenhavepressureaboutschool.A.toomanyB.toomuchC.muchtooD.somany
( ) 3. These days children have____ pres sure about school.
A. too many B. too much
C. much too D. so many
设a=(√5-1)/2,求(a^5+a^4-2a^3-a^2-a+2)/a^3-a∵2a=√5-1 2020-04-05 …
问几个c问题1,设x=2.5,y=4.7,a=7,则x+a%3*(int)(x+y)%2/4=2, 2020-04-08 …
数学:计算题和化简求值(1)(9a^3b^2-12a^2b^3+3ab^4)/(-1/2ab) ( 2020-05-16 …
已知等差数列an的前n项和为18,若S3=1,a(n)+a(n-1)+a(n-2)=3,则n等于a 2020-05-17 …
1.已知x^2-4x+1=0,则x^4+1/x^4=2.如果方程a/(x-2)+3=(1-x)/( 2020-06-25 …
对任意实数a,下列等式成立的是:A.[a^﹙2/3)]^﹙1/2﹚=a^﹙1/3) B.[a^(1 2020-06-27 …
同底数幂的除法a的3次方÷a的3次方=1?a的3次方÷a的3次方=a的(3-3)次方=0?1还是0 2020-07-30 …
已知a、b属于R+,且a不等于b,求证:a4+b4大于a3b+ab3a^4+b^4-a^3b-ab 2020-07-30 …
(a+b+c)^3-(b+c-a)^3-(c+a-b)^3-(a+b-c)^3=[(a+b+c)^ 2020-08-02 …
数学老师给学生出了一道题,计算:(2(a+b)^5-3(a+b)^4+(-a-b)^3)/(2(a+ 2020-12-09 …