Math, asked by deepanshu2810, 1 year ago

23. if a=9-4√5 find value of a²+1/a²

24.factorise x³-8x²+5x+14

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Answered by Rokk

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23. the value of a^2+1/a^2 is 2
24.x^3-8x^2+5x+14=x^2-9x+14

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