Question

Help, please! Dau coroana :)

Answer 1

1.a=4⁸:2⁶:2⁶=(2²)⁸:2⁶:2⁶=2¹⁶⁻⁶⁻⁶=2⁴=16
2.b=5⁴-22²-11²=625-484-121=20
3.c=(1681-82+1):8:5-(64-32+4-1)=1600:8:5-35=5
4.d=(3³)³⁰-4·(3²)⁴⁴+(2²)¹⁰⁴:2²⁰⁷-5·3⁸⁸=3⁹⁰-4·3⁸⁸+2-5·3⁸⁸=3⁸⁸(3²-4-5)+2=2
5.a+b+c+d=16+20+5+2=43
6.[2·(243-125)+4]:10=(2·18+4):10=40:10=4
7.{[17·(26-25)+4]-1¹⁰²}·5=(21-1)·5=20·5=100
8.7⁶<2¹⁸<3¹²
9.x=1+2+4=7
   y=1+3+9=13
=>y>x
10.3⁵·3²·5²-3⁴·5·2²=3⁷·5²-3⁴·5·2=3⁴·5(3³·5-2)