Question

If X + Y = -2 and xy=11, Find the value of (x + 1)(y + 1).

Answer 1

Step-by-step explanation:

(x+1)(y+1)

x(y+1)+1(y+1)

xy+x+y+1

substituting the values of xy and x+y we get

11+(-2)+1

11-2+1

9+1=10

therefore,

(×+y)(y+1)=10