Question

What is the value of the expression ( if x=1 and y=2 ) (x-1)(y-2) +(x+1)(y-2) +(x+1) (y+2)

Answer 1

Answer:

8

Step-by-step explanation:

(x -1)(y -2)+(x+1)(y -2)+(x+1)(y+2)

=(1-1)(2-2)+(1+1)(2-2)+(1+1)(2+2). [when,x=1&y=2]

=0+0+(2×4)

=8. [ANS]