Question

pls pls pls solve it ......​

Answer 1

its surjection

So range= co domain

f= x^2 + x+1

here domain is (-2,-1,0,1,2) given

range f(-2)= 4 -2+1= 3

f(-1)= 1-1+1=1

f(0)= 1

f(1)= 3.

f(2)= 4+2+1= 7.

so B is( 1,3,7)