examday

Official papers

Official 2018 Paper 1 · Q9

Paper 1Algebra

Find the complete set of values of the constant cc for which the cubic equation

2x3−3x2−12x+c=02x^3-3x^2-12x+c=0

has three distinct real solutions.

A−20<c<7-20<c<7
B−7<c<20-7<c<20
Cc>7c>7
Dc>−7c>-7
Ec<20c<20
Fc<−20c<-20

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

Sign in to check your answerPractise the whole paper →