Toán Lớp 6: 1191- {3x[5.4 mũ 2- (51- 7 x5)]- 2021}
2 mũ 3 .15 – [115 – (12 – 5) mũ 2]
{ 36.4 – 4. [ ( 2 mũ 4 . 5 + 2) – 7.11] mũ 2 } : 4 – 2018
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Toán Lớp 6: 1191- {3x[5.4 mũ 2- (51- 7 x5)]- 2021}
2 mũ 3 .15 – [115 – (12 – 5) mũ 2]
{ 36.4 – 4. [ ( 2 mũ 4 . 5 + 2) – 7.11] mũ 2 } : 4 – 2018
Comments ( 1 )
=1191-{3.[5.16-(51-35)]-1}
=1191-{3.[80-16]-1}
=1191-{3.64-1}
=1191-{192-1}
=1191-191
=1000
2^3 .15 – [115 – (12 – 5)^2]
=8.15-[115-7^2]
=120-[115-49]
=120-66
=54
{ 36.4 – 4. [ ( 2^4 . 5 + 2) – 7.11]^2 } : 4 – 2018^0
={144-4.[(16.5+2)-77]^2}:4-1
={144-4.[(80+2)-77]^2}:4-1
={144-4.[82-77]^2}:4-1
={144-4.5^2}:4-1
={144-4.25}:4-1
={144-100}:4-1
=44:4-1
=11-1
=10