Rút gọn
1) (0.9)^5/(0.3)^6
2)20^5*5^410/100^5
3)4^6*9^5+6^9*120/8^4*3^12-6^11
4)4^2*25^2+32*125/2^3*5^2
(0.125))2×64
(3/7)9×(7/3)10
(0.25)4×256
(0.8)5/(0.4)4
25..125×1/625×55
4×32×(24×1/32)
52×35×(0.6)2
(1/7)2×1/7×495
Tính :
a) 1,4 . 15/72 + (4/5 + 2/3) . _5/11
b) |-7/4| + |-26/9 + 2/9| : (-10/9)
c) (-3/5)2 + 41445/ 82885 + 2519 : 12512 + 1/32
Bài 1: (3điểm) Thực hiện phép tính (tính hợp lí nếu có thể):
a) ( –5) . 8 .( –2) . (–125)
b) 125 – (–75) + 32 – (48 + 32)
c) 3. (–4 )2 + 2.(–5) – 20
Thực hiện phép tính
a)\(\dfrac{5^{16}.27^{7}}{125^{5}.9^{11}}\)
b)\((-0,2)^{2}.5-\dfrac{2^{13}.27^{3}}{4^{6}.9^{5}}\)
c)\(\dfrac{5^{6}+2^{2}.25^{3}+2^{3}.125^{2}}{26.5^{6}}\)
a,\((\frac{32}{81})^2.\left(\frac{-9}{8}\right)^5.\left(-4\right)^3̣\)
b,\(\left(-25\right)^5:125^2:\left(-5\right)^3\)
c,\(\left(\frac{8}{27}\right)^3:\left(\frac{-2}{3}\right)^8\)
tính : 8^2 x 125 x 9^2 - 32 x 5^3 x 81 phần 20^3 x 3^4 - 6^8 x 5^4
B={[5^10. 7^3 - 25^2 . 49^2] : [(125 . 7)^3+5^9 . 14^3]} - {[2^12-4^6 . 9^2] : [(2^2.3)^6+8^4 . 3^5]
a) (1/2)^3 *(1/4)2 b)27^3:9^3 c)125^2:25^3 d)27^2 *8^5/6^6 *32^3
giải hộ mk