Toán Lớp 7: Tính (\frac{1}{3})^{50} . (-9)^{25} – \frac{2}{3} : 4
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Toán Lớp 7: Tính (\frac{1}{3})^{50} . (-9)^{25} – \frac{2}{3} : 4
Comments ( 2 )
=(1/3)^25. (1/3)^25.(-9)^25-2/3:4
=(1/3. 1/3.-9)^25-2/3. 1/4
=(1/9.-9)^25-1/6
=(-1)^25-1/6
=(-1)-1/6
=-6/6-1/6
=-7/6