12+13
-8+-5+[(8-12) + (13+12)] -10]}
(B-C)∩(B-C)
4 $\sqrt{81}$
(A-B)∩(B-A)
1 plus 1
f(x)=3x^2+2x+18, what is f’(x)?
sin2A+cos2A=1
L^2m^2/25pn^2+2L^3m^2/5p^2n^3+3l^m^3/10p^3 n^2
9172:2