if the zeroes of the polynomial 5x°-7x+k are reciprocal of each other then find the value of k
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let roots be a and 1/a
product of roots =a*(1/a)=1
from eqn product =k/5
k/5=1
k=5
product of roots =a*(1/a)=1
from eqn product =k/5
k/5=1
k=5
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