Question

(i) (4xy – 9z); (3xy - 162)​

Answer 1

Answer:

(4xy-9z)-(3xy-16z)

4xy-9z-3xy+16z

xy+7z

Answer 2

Answer:

Horizontal arrangement

= ( 4x y - 9 z ) - (3 x y - 16 z)

= 4 x y - 9 z - 3 x y + 16 z.

= 4 x y - 3 x y - 9 z + 16 z.

= x y + 7 z

Ans : xy + 7z