（x+3y)(x-3y)(x^2+9y^2) 和 （-3）^2n+1+3(-3)^2n

来源：学生作业帮助网 编辑：作业帮 时间：2024/06/01 14:29:37
（x+3y)(x-3y)(x^2+9y^2) 和 （-3）^2n+1+3(-3)^2n
x){B۸RSBLi[Vi*<ԣ5~3(OPXCXȴI*'K~ 6h bBh&q& 0G2ٌOvI<\R dUbԅԠڦR Dh5/.H̳ ӓ`#^RS64ЄhE *~s!1ԡƇٚPDL{+Cue$/

（x+3y)(x-3y)(x^2+9y^2) 和 （-3）^2n+1+3(-3)^2n
（x+3y)(x-3y)(x^2+9y^2) 和 （-3）^2n+1+3(-3)^2n

（x+3y)(x-3y)(x^2+9y^2) 和 （-3）^2n+1+3(-3)^2n
1（x+3y)(x-3y)(x^2+9y^2) =(x^2-9y^2) (x^2+9y^2) =(x^4-81y^4)
（-3）^2n+1+3(-3)^2n
2是不是）（-3）^（2n+1）+3(-3)^2n=（-3）^（2n+1）-（-3）(-3)^2n=
（-3）^(2n+1)-(-3)^（2n+1）=0

（x+3y)(x-3y)(x^2+9y^2)
=(x²-9y²)(x²+9y²)
=x^4-81y^4

（-3）^2n+1+3(-3)^2n
=-3^(2n+1)+3×3^(2n)
=-3^(2n+1)+3^(2n+1)
=0

化简吗？
x^4-81y^4
4*9^n+1

x(x-y)2-(y-x)3 [2/3x-2/x+y(x+y/3x-x-y)]/x-y/x 化简：{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x 计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x 化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x [(3x+y)(x-y)-(2x+3y)(x-y)]*(x-y) 计算：x+2y/x-y+2x/y-x-3y/x-y 化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方 3(x+y)-2(x-y)=11 4(x+y)+3(x-y)=9 4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11 81/8*(-x-y)^6*(x-y)^3*4/9(x+y)^4*(y-x)^2 计算(x-y)^7÷(y-x)^6+9-x-y)^3÷(x+y)^2 (3x-y)(3y+x)-(x-y)(x+y) 化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y) 2X(2X-3Y)-3Y(X+Y) (-2x y)^2-(3y-x)(-x-3y) （x+2y)^2-(x+y)(3x-y) 计算(x+y)(x+y)^2(-x-y)^3