Respuesta :

First one :

10•5^2+4•-2^2=234

Second one :
-2(3•-2+-6)=24

2((3)(−2)−6)

(−2)
((3)(−2)+−6)

(−2)
((3)(−2))
+(−2)(−6)

12+12

24

Last one :

2•-6(3•-6-5)

(2)
(−6)
((3)(−6)−5)

((2)(−6))
((3)(−6)+−5)

((2)(−6))
((3)(−6))
+((2)(−6))(−5)

216+60

=276

Hoped I helped!