tmua.me papers

tmua.me Medium Set F Paper 2 · Q5

Paper 2Number & countingAlgebra

For how many positive integer values of kk does the equation

9x−8⋅3x+k=09^x-8\cdot3^x+k=0

have two distinct real solutions for xx, one positive and the other negative?

A66
B77
C88
D1515
E1616

Read the questions freely. Sign in to check your answer, see the worked solution and save your progress.