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2. If x(5 + root 7 ) is a rational number, then x must be
equal to
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full 2 fatang
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kal 2 katang
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GIVEN,
x= root7/5 ------> eq.(1)
5/x= p root / 7
=>x = 5/ p root 7 ------->eq.(2)
EQUATING 1.AND 2....,
= root 7 / 5= 5/ p root 7
= p = 25/ 7
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