Exponents

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This is from Ole Miss site and is hard!
If A=5^4321 + 5^-4321 and Q=5^4321 - 5^-4321
find A^2 - Q^2

Type: Question • Score: 1 • Views: 795 • Replies: 1

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@cnrmaster,

A^2 - Q^2 = (A-Q)(A+Q)
A-Q = 2* 5^-4321
A+Q = 2*5^4321
(A-Q)(A+Q) = 4

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