Math  /  Numbers & Operations

QuestionExercice 2: Calculer A=3×105×7.2×1072×153;B=(2)3×(42)1×81024×(16)4C=(1)2021×(1)2022;D=(52)3\begin{array}{lc} A=\frac{3 \times 10^{-5} \times 7.2 \times 10^{7}}{2 \times 15^{3}} ; & B=\frac{(-2)^{3} \times\left(4^{2}\right)^{-1} \times 8}{1024 \times(-16)^{-4}} \\ C=(-1)^{2021} \times(-1)^{2022} ; & D=\left(\frac{-5}{2}\right)^{-3} \end{array}

Studdy Solution
Simplifier D D .
D=(25)3=23(5)3=8125=8125 D = \left(\frac{2}{-5}\right)^{3} = \frac{2^{3}}{(-5)^{3}} = \frac{8}{-125} = -\frac{8}{125}
Les solutions sont: A=825,B=256,C=1,D=8125 A = \frac{8}{25}, \quad B = -256, \quad C = -1, \quad D = -\frac{8}{125}

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