早教吧作业答案频道 -->数学-->
计算:(1)(m+n)2(2)(x-y)2(3)(a+b)(2a-5b)(4)3x(13x2+23)(5)(2y-3)(3y+2)-(y+2)(y-4)(6)-10xy2÷5xy(7)65a3x4÷35ax3.
题目详情
计算:
(1)(m+n)2
(2)(x-y)2
(3)(a+b)(2a-5b)
(4)3x(
x2+
)
(5)(2y-3)(3y+2)-(y+2)(y-4)
(6)-10xy2÷5xy
(7)
a3x4÷
ax3.
(1)(m+n)2
(2)(x-y)2
(3)(a+b)(2a-5b)
(4)3x(
1 |
3 |
2 |
3 |
(5)(2y-3)(3y+2)-(y+2)(y-4)
(6)-10xy2÷5xy
(7)
6 |
5 |
3 |
5 |
▼优质解答
答案和解析
(1)原式=m2+2mn+n2;
(2)原式=x2-2xy+y2;
(3)原式=2a2-3ab-5b2;
(4)原式=x3+2x;
(5)原式=6y2-5y-6-y2+2y+8=5y2-3y+2;
(6)原式=-2y;
(7)原式=2a2x.
(2)原式=x2-2xy+y2;
(3)原式=2a2-3ab-5b2;
(4)原式=x3+2x;
(5)原式=6y2-5y-6-y2+2y+8=5y2-3y+2;
(6)原式=-2y;
(7)原式=2a2x.
看了计算:(1)(m+n)2(2)...的网友还看了以下:
已知x/(x^2+x+1)=1/4,求分式x^2/(x^4+x^2+1)的值我查到了2种方法啊貌似 2020-05-12 …
matlaB中str1='exp(-(x-4)^2-(y-4)^2)+exp(-(x+4)^2-( 2020-05-16 …
求极限lim[cosx-e^(-x^2/2)]/x^4 其中x趋向于0.我的做法为什么错了:lim 2020-05-16 …
limx→∞(x^4+3x-1)/(3x^4+4x^2+1)对分式(x^4+3x-1)/(3x^4 2020-06-27 …
已知f(根号下x+4)=x+8根号下x,求f(x平方)由于:f(√x+4)=x+8√x则设:T=√ 2020-07-11 …
若分式方程3/x-2=a/x=4/x(x-2)有增根,则增根可能为?我知道答案是3/(x-2)=a 2020-07-30 …
1.求隐函数x+y^2-e^(xy)=siny的倒数dy/dx2.计算√4.2的近似值(根号下4. 2020-08-02 …
[C程]要求定义并调用函数funcos(e,x)计算cos(x)的值,e为精度请问我做的哪里不对? 2020-08-02 …
一个3阶行列式的计算2*(x-4)*(y-5)(y-5)*(u-4)(y-5)*(w-2)-2*( 2020-08-03 …
(x-1)(x+1)(x^2+1)(x^4+1)=x^8-1计算数学题(2+1)(2^2+1)(2^ 2020-11-15 …