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If a+1/a =5 find a2+1/a2
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4 votes
If a+1/a =5
find
a2+1/a2

User Jdstaerk
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8.1k points

1 Answer

4 votes
Square original equation, you get a^2+2+1/a^2=25, subtract two from both sides, a^2+1/a^2=23
User Milad Faridnia
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