Question

2nsquare+19n+24 explain??

Answer 1

2n square is a rule of calculating of electron in atomic shell the shell are K,L,M,N.

K = is 1st shell. 2n square = 2(1)square = 2

L = is 2nd shell. 2n square = 2(2)square = 2×4 = 8

M = is 3rd shell. 2n square = 2(3) square = 2×9=18.

N = is 4th shell. 2n square = 2(4) square = 2×16=32.

Answer 2

here we have to do the splitting the middle term method:

2n^2+19n+24

=2n^2+16n+3n+24

=2n (n+8)+3 (n+8)

=(n+8) (2n+3)

these are the required factors

hope this was the way of solving this