Toán Lớp 6: tính giá trị biểu thức b= 2 mũ 9 x 13 + 2 mũ 10 x 65/ 104 x 2 mũ 8
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Toán Lớp 6: tính giá trị biểu thức b= 2 mũ 9 x 13 + 2 mũ 10 x 65/ 104 x 2 mũ 8
Comments ( 2 )
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$=\dfrac{2^9[13+(2×65)]}{2^8×2×52}$
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$=\dfrac{2^9(13+130)}{2^9×52}$
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$=\dfrac{13+130}{52}$
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$=\dfrac{143}{52}$
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$=\dfrac{13×11}{13×4}$
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$=\dfrac{11}{4}$