if a is not equal to 0 an a-1/a=3 find i) a²+1/a² ii) a³-1/a³
Answers
Answered by
1
Answer:
Step-by-step explanation:
a is not equal to 0
a-1/a=3
(i) . a²+1/a²=(a-1/a)²+2×a×1/a
=3²+2×1
=9+2=11
(ii). a³-1/a³=(a-1/a)³+3×(a×1/a)(a-1/a)
=3³+3×1×3
=27+9=36.
Similar questions