Question

If a-1/a = 5, find the value of a² +1/a²​

Answer 1

Answer:

27

Step-by-step explanation:

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Answer 2

Answer:

(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