Find a factor 2x³-7x²-14x-5
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Answer:
a^2 + 1/ a^2 = 2
(a+1/a)^2 - 2 × a × 1/a =2
(a+1/a)^2 -2 = 2
(a+ 1/a) ^2 = 4
(a+ 1/a) = 2
since
a + 1/a = 2
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