Question

. From the product (x - 2y + 1)(x + y), subtract the product (x + y + 1)(x - 2y) and then evaluate it for
x = -2 and y = -1.​

Answer 1

Answer:

-7

Step-by-step explanation:

product of first = x²-2y²-xy+x+y

product of second = x²-xy-2y²-x-2y

after subracting we get ,

x+y+x+2y = 2x+3y

now , putting the above values we get,

2(-2)+3(-1) = -4-3 = -7

good luck.