. Efectuați:
a) 2³×5+3²×(5²-2³×3)+144:9;
b) 3⁴:3²:3⁰ +2³×(7²-2⁴×3)+576:48;
c) 3×2³ +2018⁰ +(2⁶-3²×7)²⁰¹⁷+12×108:81; d) 2⁶ :4+0²⁰¹⁸ +3² (5⁴ +3⁸:3⁶)⁰ +7×(2²×5²-3²×11)²⁰¹⁸​