Question

If alpha and beta are zeroes of quadratic polynomial 2x^2-5x-7 then 1/alpha +1/beta =?

Answer 1

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Answer 2

Answer:

Step-by-step explanation:

Alpha +beta = -b/a

Alpha +beta=-(-5)/2

=5/2

Alpa×beta=c/a

=-7/2

1/alpha+1/beta

Beta+alpha/alpha×beta

5/2÷7/2

5/7