Question

Please please please please help me.
Please give this answer.

Answer 1

m=-v/u

v/u=3

u=x

v=3x

R=2f

f=2

1/2=1/v-1/u

1/2=1/3x-1/x

1/2=-2/3x

x=3/4

u=-3/4

v=9/4

image is magnified