Respuesta :

charstar
10.
12*3^2+36 needs to be 540
12*9+36
9+36=45
12*45=540 so
12(3^2+36)

11.
32/2^3-4 needs to be 8
32/(2^3-4)

12.
2.3^2+9*4/2 needs to be 28.58
5.29+9*4/2
(5.29+9)*4/2=28.58
(2.3^2+9)*4/2

Hope this helps :)