Question

If x = ( 9 + 4√5), then (√ − 1 /√ )

Answer 1

Answer:

What is this (√ − 1 /√ ) ?

If it is (√x - 1 )/(√x)

Then, √x = (2 + √5)

So, √x - 1 = (1 + √5)

√x = (2 + √5)

So, (√x - 1 )/(√x) = (1 + √5) / (2 + √5) = (3.2360679774997896964091736687313) / (4.2360679774997896964091736687313‬)

=  0.76393202250021030359082633126873‬ ≈ 0.75

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