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Question Number 75987 by Ajao yinka last updated on 21/Dec/19
Answered by MJS last updated on 22/Dec/19
m=x∧n=yx3+(375y)x+(y3−1953125)=0Cardanowithp=375y∧q=y3−1953125⇒x=125−y⇒m=125−y∧n=y;(mn)∈N2⇒⇒y=j2∧125−y=k2;j,k∈N⇒⇒y∈{4,25,100,11}⇒⇒(mn)∈{(211),(510),(105),(112)}
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