早教吧作业答案频道 -->数学-->
两个计算题!1.[（3x+1）^2][(3x-1)^2]2.(x+1)[(x^2)+1][(x^4)+1](x-1)
题目详情
两个计算题!
1.[（3x+1）^2][(3x-1)^2]
2.(x+1)[(x^2)+1][(x^4)+1](x-1)
1.[（3x+1）^2][(3x-1)^2]
2.(x+1)[(x^2)+1][(x^4)+1](x-1)
▼优质解答
答案和解析
1.[(3x+1)^2][(3x-1)^2]
=[(3x+1)(3x-1)]^2
=[9x^2-1]^2
=81x^4-18x^2+1
2.(x+1)[(x^2)+1][(x^4)+1](x-1)
=(x+1)(x-1)[(x^2)+1][(x^4)+1]
=(x^2-1)[(x^2)+1][(x^4)+1]
=[(x^4)-1][(x^4)+1]
=[(x^8)-1]
=[(3x+1)(3x-1)]^2
=[9x^2-1]^2
=81x^4-18x^2+1
2.(x+1)[(x^2)+1][(x^4)+1](x-1)
=(x+1)(x-1)[(x^2)+1][(x^4)+1]
=(x^2-1)[(x^2)+1][(x^4)+1]
=[(x^4)-1][(x^4)+1]
=[(x^8)-1]
看了 两个计算题!1.[（3x+1...的网友还看了以下：
初一数学题（合并同类项）有这样一道计算题：计算（2x^3-3x^y-2xy^2）-（x^3-2xy 2020-05-16 …
几道数学问题8.已知3x^2-mx-12=(3x+2)(x-n),则m=,n=.10.若m^(m+ 2020-07-09 …
导数第一部分综合测试题求下列函数的导数1.y=1/4x^3-1/3x^2+5x-12.y=1/2x 2020-07-18 …
有这样一道计算题：“计算（2x的3立方-3x的平方y-2xy的平方）-（x的立方-2xy的平方+y 2020-07-22 …
二元一次方程组,求后面的过程|3/4(3x-2)+2/5(4y-3=1|2(3x-2)+3(4y- 2020-08-03 …
因式分解几题(3x+1)^2(3x-1)(x+1)-64(x-1)(x-2)(x-4)(x-8)-2 2020-10-31 …
..解下列方程组(1)2/3X+3/4Z=1/3,4/5X+5/6Z=7/15（2）3（2X-Y）+ 2020-10-31 …
(y-1)(y+3)=12(x+1)^2-3x(x+1)^2=0(y+3)^2=4(2y-5)^2上 2020-11-01 …
1:(2/3x^ay^b)^2*(-9/5x^3ay)*(-xyz)2:(5*10^5)^3除以(2 2020-11-07 …
具体看问题补充,其中x=1/2,y=-1,甲同学把x=1/2看错成x=-1/2,但计算结果仍正确,你 2020-12-31 …