Maths HELP

G(x)=(x-1)(x-2)(x-a)(x-b)

given that g(3)=40 show that a+b=1

Maths HELP

Help me
here is the queastion can u asmwer it now
£1500 is split between three friends
molly has less than 1/3 of the total
annie has more than 1/3 of the total
ben has less than 160% of molly's share

split the money useing a whole number ratio so that it satisfies all of these conditions