if a - 1/a=-6,find the value of a²+1/a²
Answers
Answered by
0
Answer:
a²+1/a² = 38
Step-by-step explanation:
a-1/a = -6
=> (a-1/a)² = (-6)²
=> a²+1/a²-2*a*1/a = 36
=> a²+1/a²-2 = 36
=> a²+1/a² = 36+2
=> a²+1/a² = 38
using formula (x-y)² = x²+y²-2*x*y
Similar questions