Ta có : x6 - y6
\(=\left(x^3\right)^2-\left(y^3\right)^2\)
\(=\left(x^3-y^3\right)\left(x^3+y^3\right)\)
\(=\left(x-y\right)\left(x^2+xy+y^2\right)\left(x+y\right)\left(x^2-xy+y^2\right)\)
x6-y6=(x3)2-(y3)2=(x3-y3)(x3+y3)
=(x-y)(x2+xy+y2)(x+y)(x2-xy+y2)
đến đây bạn tự làm tiếp nha
\(x^6-y^6\)
\(=\left(x^3\right)^2\)\(-\)\(\left(y^3\right)^2\)
\(=\left(x^3-y^3\right)\left(x^3+y^3\right)\)
\(=\left(x-y\right)\left(x^2+xy+y^2\right)\left(x+y\right)\left(x^2-xy+y^2\right)\)