Is there an easy way of solving Q12 in Quant?
Put x=16 and x=81 nd the equatn..
They are perfect squares so u cn easily get d range
See the expression will yield a positive value for a positive x, hence y should be negative which is only in option A. or you can try to put x=16 and the expression gives y= -13 and that value is present in only one of the ranges in options.. i.e option A
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