If alpha and beta are the zeroesof the polynomial x²+7x+7 find the value of 1/alpha +1/beta-2alpha beta
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alpha+ beta = -b/a = 7/1
alpha ×beta= c/a=7/1
then
1/alpha+ 1/beta-2alphabeta.
beta+alpha -2alphabeta/alpha beta
-7/1-2×7/1/7/1
5
alpha ×beta= c/a=7/1
then
1/alpha+ 1/beta-2alphabeta.
beta+alpha -2alphabeta/alpha beta
-7/1-2×7/1/7/1
5
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