Question

If a=1-√5, Find the value of a²-1/a²​

Answer 1

Answer:

27

I hope that it will helps you

Please mark it as brainelist

Answer 2

Answer:

Step-by-step explanation:

(a-1/a)^2=5^2

a^2+1/a^2+2×a×1/a=5×5

a^2+1/a^2+2=25

a^2+1/a^2=25-2=23

a^2+1/a^2=23

mark as brainlist