Ai giúp e bài 3 vs ạ từ câu 6 – 10 ạ nhanh nhất e sẽ vote 5sao và ctlhn ạ

Đáp án:

\(\begin{array}{l} 6)\ 0\\ 7)\ 106\\ 8)\ 85\\ 9)\ 307\\ 10)\ 1\end{array}\)

Giải thích các bước giải:

\(\begin{array}{l} 6)\ (5^4+4^7).(8^9.2^7).(2^4-4^2)\\ =(5^4+4^7).(8^9.2^7).(16-16)\\ =(5^4+4^7).(8^9.2^7).0\\ =0\\ 7)\ 120-\left [30-(5-1)^2\right ]\\ =120-\left [30-4^2\right ]\\ =120-\left [30-16\right ]\\ =120-14=106\\ 8)\ 115-5.\left [70-(43-39)^3\right ]\\ =115-5.\left [70-4^3\right ]\\ =115-5.\left [70-64\right ]\\ =115-5.6\\ =115-30\\ =85\\ 9)\ 247+3.\left [(11-3^2)^5-2^2.3\right ]\\ =247+3.\left [(11-9)^5-2^2.3\right ]\\ =247+3.\left [2^5-2^2.3\right ]\\ =247+3.\left [32-4.3\right ]\\ =247+3.\left [32-12\right ]\\ =247+3.20\\ =247+60\\ =307\\ 10)\ 50:\left \{2.\left [52-(3.5-2^2.3)^3\right ]\right \}\\ =50:\left \{2.\left [52-(15-12)^3\right ]\right \}\\ =50:\left \{2.\left [52-3^3\right ]\right \}\\ =50:\left \{2.\left [52-27\right ]\right \}\\ =50:\left \{2.25\right \}\\ =50:50\\ =1\end{array}\)

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