Do 9+4 because you need to get m alone. you get 13 plug 13 in for m (13-4=9) and then 9=9
X is 7. Hope this helps! Photo above
I should say that 13, 24, 14 are the next three numbers, because as you can see above the first(11) number is the third(12) number minus 1 and the fourth(23) is the second (22) plus 1 if you understand what I`m trying to say
(x+1)2-
=it is meant to be (x+1)2
=2(x) + 2(1)
= 2x +2
I think
its d, I just solved it...
