Help me pls Mk cho ctlhn và 5 sao và 1 tim

1

a)3²×10³-[13²-5²×4+2×15]×10³

=10³[3²-(13²-5²×4+2×15)]

=1000[6-(169-25×4+30)]

=1000[6-(169-60+30)]

=1000(6-169+60-30)

=1000(-133)

=-133000

b)10+[8²-48×5+2²×10+8]÷2 mũ 5

=10+(64-240+4×10+8)÷32

=10+(64-240+40+8)÷32

=10+(-128)÷32

=10-4

=6

c)(46-32²-54-42²)36-1872

=(46-1024-54-1764)36-1872

=(-2796)36-1872

=-100656-1872

=-1025298

d)2[7-3 mũ 2020÷3 mũ 2019÷2²+199]-400

=2(7-3÷4+199)-400

=2(7-3/4+199)-400

=14-3/2+298-400

=(14+298-400)-3/2

=-88-3/2

=-176/2-3/2

=-179/2. Bài 2

a)[5²×3-3²×8²+11²]÷13-8 mũ 2020÷8 mũ 2021

=(25×3-9×64+121)÷13-8

=(75-576+121)÷138

=-380÷138

=30/23

b)177÷[2×4²-9+3²×15-10]+2020 mũ 0

=177÷(2×16-9+9×15-10)+1

=177÷(32-9+135-10)+1

=177÷148+1

=177/148+1

=177/148+148/148

=325/148

c)2022 mũ 2022÷2022 mũ 2021+(1080-3×3³+999)

=2022+(1080-3×27+999)

=2022+(1080-81+999)

=2022+(999+999)

=2022+1998

=4020

Bài 3

80-(130-8×7-4²)

=80-(130-56-16)

=80-58

=22