Question

What is the product of 2x + y and 5x – y + 3?

Answer 1

Answer:10x^2+11xy-6y^2

Explanation:

( 2 x + 3 y ) ( 5 x − 2 y ) = 2 x ( 5 x − 2 y ) + 3 y ( 5 x − 2 y )

= 10 x 2 − 4 x y + 15 x y − 6y 2

= 10 x 2 + 11 x y -6 y 2 .