Question

plese solve it plese it's argent

Answer 1

hope it helps u ...if satisfied plz mark brainliest

Answer 2

Sol:(i)given:x=3,y=2

in x²-4xy+y²

=3*3-4*3*2+2*2

=9-24+4

=9-28

=19

(ii)x=1,y=1,z=-1

=7*1*1*1-3*-1*-1

=7-3

=4

(iii)a=2,b=1

=(4*2*2-6*2*1+9*1*1)(2*2+3*1)

=(16-12+9)(4+3)

=13*7

=91

HOPE IT HELPS!1