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Pls solve Q7 i am unable to

Answer»

U need to find alpha n beta...
alpha = beta = - 1
now write the EQUATION like
x^2 - ax +a - b
so alpha + beta WOULD be a
(relation with co EFFICIENT)
a = -2
also, alpha × beta = a - b
now, -1 × -1 = -2 - b
finally, b = -3



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