Cześć ;-)
a)
[tex]2+5\cdot7=2+35=\boxed{37}\\\\12:2+4=6+4=\boxed{10}\\\\36:(6+3)=36:9=\boxed4[/tex]
b)
[tex]10-8+2\cdot3=2+6=\boxed8\\\\45-(5+2\cdot3)=45-(5+6)=45-11=\boxed{34}\\\\57-(7-3)=57-4=\boxed{53}[/tex]
c)
[tex]2+5^2=2+25=\boxed{27}\\\\3^2+(2+3)^2=9+5^2=9+25=\boxed{34}\\\\5+32:2^2=5+32:4=5+8=\boxed{13}[/tex]
Pozdrawiam!