A) 78-12.5+3ᒾ B)4ᒾ.55+2.45.8-2022 C) 1800:{49+[49+2.(6ᒾ-34)³-5:5³]}

1 bình luận về “A) 78-12.5+3ᒾ B)4ᒾ.55+2.45.8-2022 C) 1800:{49+[49+2.(6ᒾ-34)³-5:5³]}”

1. a,78-12*5+3^2

   =78-60+9

   =27

   $\\$

   b,4^2*55+2*45*8-2022

   =16*55+720-2022

   =880-1302

   =-442

   $\\$

   c,1800:{49+[49+2*(6^2-34)^3-5:5^3]}

   =1800:{49+[49+2*(36-34)^3-5^(-2)]}

   =1800:{49+[49+2*2^3-1/25]}

   =1800:{49+[49+2*8-1/25]}

   =1800:{49+[49+16-1/25]}

   =1800:{49+1624/25}

   =1800:2849/25

   =15,7950158

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