早教吧作业答案频道 -->数学-->
1.-3x^2×(-2x^2+1/4x-1)2.(-5x^2)×(-2y)+3xy(1-3x)3.(-4a^2b)^2×(1/2a^2b^2-3ab-5b^2)4.5x^3×x^2+(-3x^3)^2-(-x^2)^3
题目详情
1.-3x^2×(-2x^2+1/4x-1)
2.(-5x^2)×(-2y)+3xy(1-3x)
3.(-4a^2b)^2×(1/2a^2b^2-3ab-5b^2)
4.5x^3×x^2+(-3x^3)^2-(-x^2)^3
2.(-5x^2)×(-2y)+3xy(1-3x)
3.(-4a^2b)^2×(1/2a^2b^2-3ab-5b^2)
4.5x^3×x^2+(-3x^3)^2-(-x^2)^3
▼优质解答
答案和解析
1.-3x^2×(-2x^2+1/4x-1)=6x^4 - (3/4)·x³ + 3x².2.(-5x^2)×(-2y)+3xy(1-3x)=5x²y +3xy-9x²y=-4x²y +3xy=xy(-4x+3).3.(-4a^2b)^2×(1/2a^2b^2-3ab-5b^2)=-2a^4·b^4 + 12a³b³...
看了 1.-3x^2×(-2x^2...的网友还看了以下:
探究题:(x-1)(x+1)=x^2-1(x-1)(x^2+x+1)=x^3-1探究题:(x-1)( 2020-03-30 …
1/1,-1/2,-2/1,1/3,2/2,1/3,-1/4,-2/3,-3/2,-4/1,1/5 2020-04-09 …
分式求和问题1/(2^k+1)+1/(2^k+2)+…+1/2^(k+1)为什么1/(2^k+1) 2020-04-26 …
S=(1+1/1*2+(2+1/2*3)+(3+1/3*4)+...+(20+1/20*21)S= 2020-04-27 …
1/2*101/100=101/200这一步是因为什么这么做的?原题是1-1/2^2)(1-1/3 2020-05-14 …
谁会用MATLAB计算 权向量矩阵是A=[1,1/2,3,1,6,8,9,1/2 2,1,5,2, 2020-05-15 …
设Tn=1/2^0+2/2+3/2^3+…+n/2^(n-1)(1)(1/2)*(1)得:(1/2 2020-06-02 …
在○里填上适当的运算符合,使等式成立(1)1/2○1/2○1/2○1/2○1/2=0(2)1/2○ 2020-07-08 …
必修I·指数函数部分化简[1+2^(1/8)][1+2^(1/4)][1+2^(1/2)]快+好者 2020-08-02 …
如果设y=x^2/1+x^2=f(x),并且(f)表示当x=1时,y的值,既f(1)=1^2/1^2 2021-02-05 …