Question

HELP ME WITH THESE THREE QUESTIONS PLEASE. I WILL MARK BRAINLIEST.​

Answer 1

Answer:

(i) let the no. required be x

(-8)^-1x=(10)^-1

x=-8/10

(ii)7/20,11/40,9/16,19/16,34/16

(iii)x+1/x=20

on squaring both sides

x2+1/x2+2=400

x2+1/x2=398

Answer 2

Answer:

HOPE IT HELPS.

MARK IT BRAINLIST.