Question

If alpha and beta are the zeries of the polynomial x^2+x-2 find the value of 1÷alpha -1÷beta

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

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Step-by-step explanation:

a+b=-1 ( sum of roots let a and b be alpha and beta)....(1)

ab=-2...(2)

(1)/(2)

1/a+1/b= 1/2

Squaring on both sides

1/a^2+/b^2+1/ab=1/4

1/a^2+1/b^2=1/4+1/2=3/4

Now

(1/a-1/b)^2

=1/a^2+1/b^2-1/ab

=3/4+1/2

=5/4

=√5/2