Question

PHÂN TÍCH ĐA THỨC THÀNH NHÂN TỬ

4x² + 8x +xy +2y

Answer 1

4x²+8x+xy+2y

<-> 4x(x+2)+y(x+2)

<-> (x+2)(4x+y)

Answer 2

\(4x^2+8x+xy+2y\)

\(=\left(4x^2+8x\right)+\left(xy+2y\right)\)

\(=4x\left(x+2\right)+y\left(x+2\right)\)

\(=\left(4x+y\right)\left(x+2\right)\)

Answer 3

Ph ntu 

15(x-y) - 20x ( y-x)

Answer 4

\(4x^2+8x+xy+2y\)

\(=\left(4x^2+8x\right)+\left(xy+2y\right)\)

\(=4x\left(x+2\right)+y\left(x+2\right)\)

\(=\left(x+2\right)\left(4x+y\right)\)