Question

(2³ . 97 +8 . 75 -- 47  .  2³) ÷10²

^{GIÚP EM NHANH VỚI Ạ}

 

Answer 1

`#3107.101107`

\(\left[2^3\cdot97+8\cdot75-\left(-47\right)\cdot2^3\right]\div10^2\)

\(=\left(2^3\cdot97+2^3\cdot75+47\cdot2^3\right)\div10^2\)

\(=\left[2^3\cdot\left(97+75-47\right)\right]\div10^2\)

\(=\left(2^3\cdot125\right)\div10^2\)

\(=\left(2^3\cdot5^3\right)\div10^2\)

\(=\left(5\cdot2\right)^3\div10^2\)

\(=10^3\div10^2\)

\(=10\)

Answer 2

\(\left(2^3.97+8.75-47.2^3\right):10^2\\ =\left[\left(97-47+75\right).2^3\right]:100\\ =\left[125.8\right]:100\\ =1000:100=10\)