Given a 2-5A + 1 = 0 (a ≠ 0), find the value of a 2 + 1A 2
∵a2-5a+1=0(a≠0),∴a+1a=5,∴(a+1a)2=52,∴a2+1a2=52-2=23.
What is the 64th power of 2?
64 power of 2 = 18446744073709551616
What is the Square-1 of 99
=(99+1)×(99-1)
=100×98
=9800
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