Calculati:
a)5•7²-3²•{2²•3³-2•2³•3²-5•(3⁴-5²•3)]}
b)3²+2²•5•{5²+2³•[3•2²+(2²•5²-2⁶)]}
c)360:{3•2²+2•[3•2³+(12+3•4²):2²]}+60
d)360:{2³+2•[2•3²+(14+2•5²):2³]}+40​
Dau coroana!