\(R=2x^3y\left[-3\left(-x\right)y^4\right]\)
\(=2x^3y\left[3xy^4\right]\)
\(=6x^4y^5\)
Vậy R = 6x^4y^5
\(R=2x^3y\left[-3\left(-x\right)y^4\right]\)
\(=2x^3y\left[3xy^4\right]\)
\(=6x^4y^5\)
Vậy R = 6x^4y^5
a.\(3\left(x-1\right)=3\left(y-2\right);4\left(y-2\right)=3\left(z-3\right)v\text{à}2x+3y-z=-250\)
b.\(\frac{x^3}{8}=\frac{y^3}{64}=\frac{z^3}{216}v\text{à}x^2+y^2+z^2=14\)
giải ra giúp mik nha!!!!!!!!!
a, \(\text{[}\left(x-y\right)^3+3\left(x-y\right)\text{]}:\dfrac{1}{3}\left(x-y\right)\)
b, \(\left(8x^3-27y^3\right):\left(2x-3y\right)\)
c, \(\text{[}5\left(x+2y\right)^6-6\left(x+2y\right)^5\text{]}:2\left(x+2y\right)^4\)
Tim x,y,z biet: \(3\left(x-1\right)=3\left(y-2\right);4\left(y-2\right)=3\left(z-3\right)v\text{à}2x+3y-z=-250\)
Hôm nay chủ nhật, chắc ai cũng rảnh giúp tớ vs nha !!!!!!!!Mai di hoc roi!
Tìm x,y
\(\left(2x-5\right)^{2006}+\left(3y+4\right)^{2008}+\left|\frac{4}{3}x+\frac{5}{2}y\right|^{2007}=0\)
giúp mik vs mik đang cần gấp
tính đơn thức:\(2x^4.\left(3y^2\right)^3y^3\)
tìm x,y biết
\(\left|2x-5\right|+\left|3y+1\right|=0\)
\(\left|3x-4\right|+\left|3y-5\right|=0\)
\(|16-|x||+\left|5y-2\right|=0\)
\(\left|2x-5\right|+\left|xy-3y+2\right|=0\)
Tìm x, y, z:
\(3.\left(x-1\right)=2.\left(y-2\right);\)\(4.\left(y-2\right)=3.\left(z-3\right)\)và \(2x+3y-z=50\)
Tính giá trị biểu thức
A=\(2x+2y+3xy\left(x+y\right)+5\left(x^3y_{ }^2+x^2y^3\right)\)
tại x+y=0
B=\(3xy\left(x+y\right)+2x^3y+2x^2y^2\)
tại x+y=0