Question

x²ⁿ - x²ᵐy²ᵐ =?

Answer 1

\(=x^{2n}-\left(xy\right)^{2m}\)

= \(\left(x^n\right)^2-\left(\left(xy\right)^m\right)^2=\left(x^n-\left(xy\right)^m\right)\left(x^n+\left(xy\right)^m\right)\)

Answer 2

\(\left(x^n+x^my^m\right)\left(x^n-x^my^m\right)\)

chắc là vậy.??