Question

phan tich cac da thuc:

x^2-2x+xy-2y

Answer 1

Bài này 2 cách :

Cách 1 :

\(x^2-2x+xy-2y\)

\(=x\left(x-2\right)+y\left(x-2\right)\)

\(=\left(x-2\right)\left(x+y\right)\)
Cách 2 :

\(x^2-2x+xy-2y\)

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

\(=x\left(x+y\right)-2\left(x+y\right)\)

\(=\left(x-2\right)\left(x+y\right)\)

Answer 2

Answer 3

\(x^2-2x+xy-2y\)

\(=x\left(x-2\right)+y\left(x-2\right)\)

\(=\left(x-2\right)\left(x+y\right)\)