Question

X= - 1 e y=3
A)2xy-5y
B)4y-2xy+3xy​

Answer 1

a) 2xy-5y

2 × (-1) × 3 - 5 × 3

-2 × 3 - 15

-6 - 15

-21

b) 4 × 3 - 2 × (-1) × 3 + 3 × (-1) × 3

12 + 2 × 3 - 3 × 3

12 + 6 - 9

9