If p:q is the sub-duplicate ratio of p-(x square) : q-(x square) then (x square)?
A- p divided by p+q B- q divided by p+q C- pq divided by p-q D- none of these
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as we know that sub duplicate is ntng but square root p:q=square root of p-x(square/q-x(square apply square on both sides then we get p(square/q(square=p-x(square/q-x(square cross multiply we get p(square)q-x(square)p(square)=q(square)p-q(square)x(square) then we get x(square)=pq/p+q
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Ameena
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cpt - common proficiency test