3
4
5
6
-1
-3
1
9y4 – 1.960y2 + 7.696 = 0.
2
9
-2
8
-6
-6(-4)-(-2-5)/1
-2=2x/x+1
13 plus 9 bodmas
factorise: 6b+9s+2gb+3gs
$\sqrt{x+1}$ -$(-2)^{2}$ =12