The Student Room Group

maths paper 1

everyone got 54 for the consecutive integer right?
Original post by bwwwwwwww
everyone got 54 for the consecutive integer right?

yep
Original post by bwwwwwwww
everyone got 54 for the consecutive integer right?

it took me while to realise that i had to set my term-to-term rule to = 1 as it was consecutive integers, 2k^2 -9k - 4 = 1
then you can factorise and solve 2k^2 - 9k - 5 =0 to get k as 5

Quick Reply