Question

4y.(3y - 5z) - 3z(5z - 3y) = (...) . (4y + 3z)

Phân tích thành nhân tử

Answer 1

4y.(3y - 5z) - 3z(5z - 3y) 

= 4y ( 3y - 5z ) - 3z .[ - ( 3y - 5z ) ] 

= 4y ( 3y - 5z ) + 3z ( 3y - 5z )

= ( 3y - 5z ) ( 4y + 3z )

Study well 

Answer 2

\(4y\left(3y-5z\right)-3z\left(5z-3y\right)=\left(...\right)\left(4y+3z\right)\)

\(\Rightarrow4y\left(3y-5z\right)+3z\left(3y-5z\right)=\left(...\right)\left(4y+3z\right)\)

\(\Rightarrow\left(4y+3z\right)\left(3y-5z\right)=\left(...\right)4y-3z\)

\(\Rightarrow\left(...\right)=3y-5z\)