Question

Phân tích đa thức thành nhân tử :

\(x^{2+xy-5x-5y}\)

Answer 1

\(x^2+xy-5x-5y\)

\(=\left(x^2+xy\right)-\left(5x+5y\right)\)

\(=x\left(x+y\right)-5\left(x+y\right)\)

\(=\left(x-5\right)\left(x+y\right)\)

Answer 2

\(x^2+xy-5x-5y\)

\(=x\left(x+y\right)-5\left(x+y\right)\)

\(=\left(x+y\right)\left(x-5\right)\)

Answer 3

Ta có:\(x^2+xy-5x-5y\)

=\(\left(x^2+xy\right)-\left(5x+5y\right)\)

=\(x\left(x+y\right)-5\left(x+y\right)\)

=\(\left(x-5\right)\left(x+y\right)\)

Answer 4

\(x^2+xy-5x-5y\)

\(\left(x^2-5x\right)+\left(xy-5y\right)=x\left(x-5\right)+y\left(x-5\right)\)

\(=\left(x-5\right)\left(x+y\right)\)