Các câu hỏi tương tự
a) rút gọn: \(\dfrac{4^5x9^4-2x6^9}{2^{10}x3^8+6^8x20}\)
b) Cho A=\(\dfrac{1}{2}+\dfrac{2}{2^2}+\dfrac{3}{2^3}+\dfrac{4}{2^4}+\dfrac{5}{2^5}+...\dfrac{99}{2^{99}}+\dfrac{100}{2^{100}}\).So sánh A với 2
4^5x9^4 - 2x6^9 / 2^10x3^8+6^8x20
Rút gọn : A=4^5x9^4-2x6^9/ 2^10x 3^8 + 6^8 x 20
giúp mình gấp với
RÚT GỌN:
\(\frac{\text{4^5x9^4+2x6^9}}{\text{ }\text{2^10x3^8+6^8x20}}\)
1/4 x 2/6 x3/8 x 4/10 x 5/12 x....x 30/62 x 31/64=2n. Tìm n
Tính:
a) -5/7(14/5 - 7/10) : |-2/3| - 3/4(8/9 + 16/3) + 10/3(1/3 + 1/5)
b) 17/-26(1/6 - 5/3) : 17/13 - 20/3(2/5 - 1/4) + 2/3(6/5 - 9/2)
c) -8/9(9/8 - 3/2) + 5/4 : (5/2 - 15/4) - 3/4(10/9 - 8/3) : (-1/3)
d) 21/10 : (12/5 - 9/10) . (-4/7) - 3/2(1/6 - 7/12) + 1/5(3/2 - 1/4)
a)205-510/1005 b)46x95+69x120/84x312-611
(-8)4x272+2x69
---------------------------------
26x67-(-2)7x20x94
(0,8)^5 / (0,4)^6
2^15*9^4 / 6^3*8^3
8^10+4^10/8^4+4^11