Question

if alpha and beta are the zeros of the quadratic polynomial f x is equal to x square - 2 x minus 8 then find the value of Alpha minus beta​

Answer 1

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Answer 2

Answer:

we have alpha +beta=2

and alpha×beta=-8

alpha -beta=√(alpha+beta)^2-4(alpha ×beta)

√2^2+4×-8

=√4+32=√36

√36=6