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Multiple Choice Questions

If the coefficient of the quadratic equation are rational amp the coefficient of x2 is 1 ...........

Mathematics (NDA) Quadratic Equations

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If the coefficient of the quadratic equation are rational & the coefficient of x² is 1, then find the equation one of whose roots is tan $\Pi$ /8 ?

X² -2x-1=0

X² +3x-1=0

X² +2x-1=0

X² +2x-2=0

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Explanation:

tan $\Pi$ ?/8 =√2 -1

other root is =-1+√2

equation is x=√2 -1

x=-1+√2

(x-√2 +1)(x+1-√2)=0

X² +2x-1=0

By: bhavesh kumar singh

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