Question

Answer 1

Giúp mị lm bài o vs p ạ

Answer 2

\(\left(x-3\right)\cdot\left(x+3\right)=x^2-9\)

\(\left(x+4\right)\cdot\left(x-4\right)=x^2-16\)

Yêu cầu đề là gì vậy em ? 

Answer 3

Answer 4

\(o,\left(x-3\right)\left(x+3\right)=x^2-9\\ p,\left(x+4\right)\left(x-4\right)=x^2-16\)

Answer 5

j) \(x^2-9y^2=\left(x-3y\right)\left(x+3y\right)\)