Question

If a²-5a-1=0 and a≠0; find a²-1/a²​

Answer 1

Step-by-step explanation:

a^2=1+5a

a^2=6a

a^2/a=6

a=6

a^2-1/a^2

6^2-1/6^2

36-1/36

35/36

Answer 2

Answer:

a²=1+5a

a²=6a

a²/a = 6

a=6

therefore,

a²-a²/1

6² - 6²/1

36 - 36/1

(36×36-1×1)/36

1294/36

647/18 is your answer

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