CAT Exam

If the equations 2x^2 +x+k=0 and x^2+ x/2-1= 0 have common roots, then what is the value of k ?

Read Solution (Total 1)

k=-2 Second equation is x^2+x/2-1=0
2x^2+x-2=0 compare with first equation and solution k - -2
12 years agoHelpfull: Yes(5) No(0)

CAT Other Question

A man can feed himself for a certain number of days with Rs.1200. If his cost per day increases by Rs.20, he can feed himself for 30 days less. Find the number of days he used to feed himself earlier. a sum of rs 300 was paid for a work that a can do in 32 days,b in 20 days,c in 12 days and d in 24 days how much did c receive if all the 4 work together