Question

Simplify and verify the result for x=2 and y=1 (x+y)(2x+y)+(x+2y)(x-y)

Answer 1

Answer:

19

Step-by-step explanation:

x=2,y=1

(2+1)(2*2+1)+(2+2*1)(2-1)

=(3*5)+4*1

=15+4

=19 (ans)