\(B=x^3+y^3+z^3-3xyz=\left(x+y\right)^3+z^3-3xy\left(x+y\right)-3xyz\)
\(=\left(x+y+z\right)\left(x^2+y^2+z^2+2xy-yz-xz\right)-3xy\left(x+y+z\right)\)
\(=\left(x+y+z\right)\left(x^2+y^2+z^2-xy-yz-xz\right)\)
X^3+Y^3+Z^3-3xyz
phan tich da thuc thanh nhan tu
phan tich da thuc thanh nhan tu
x^3+y^3+z^3-3xyz
phan tich da thuc thanh nhan tu
x^2+y^2+z^2+3xyz
Phan tich da thuc thanh nhan tu
x^2 + y^2 + z^2 - 3xyz
phan tich da thuc thanh nhan tu
x^2+y^2+z^2+3xyz
phan tich da thuc thanh nhan tu
x3+y3+z3- 3xyz
phan tich da thuc thanh nhan tu (x-y).z^3 +(y-z).x^3 +(z-y).y^3
(x+y+z)^3 - (x+y-z)^3 - (y+z-x)^3 - (z+x-y)^3
Phan tich da thuc thanh nhan tu
Phan tich thanh nhan tu
x^3+y^3+z^3-3xyz
