SSC Government Jobs Exams Numerical Ability Algebra

x^-3x+1=0
then
x^5+1/x^5=?

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Ans. 0

x^-3x+1=0;
x^-3x=-1;
1/x^3x =-1;
solving ths eq. x=-1; x^5=(-1)^5=-1
x^5+1/x^5= (-1+1)/(-1)=0
11 years agoHelpfull: Yes(0) No(1)

SSC Other Question

Out of 1865 people, 660 can speak English and 1305 can speak Marathi. But, 120 persons can't speak either language. Then how many can speak both languages ? x^2-3x+1=0

then

X^5+1/X^5