Question

Simplify:
(i) (x + 1) (y + 1) + 4​

Answer 1

Step-by-step explanation:

x(y+1)+1(y+1) + 4

xy + x + y + 1 + 4

xy+x+y+5......

Answer 2

Answer:

xy+x+y+5

Step-by-step explanation:

(x+1)(y+1)+4

Using FOIL(First outer inner last) rule to multiply both terms in brackets,

(x*y+x*1+1*y+1*1)+4

xy+x+y+5