Question

please tell me answer all on image​

Answer 1

Answer:

(1)2pq=2.-4.1=-8. (2)p^2-q^2=(-4)^2-(1)^2=-16-1=-17. (3)1+p^2+q^2=1+(-4)^2+1^2=1+(-16)+1=-18

Answer 2

Answer:

HOPE IT HELPS YOU :) HOPE u understand it i used the formulas so ..