\(\dfrac{7.12^8.5^4-6^9.20^4}{6^{10}.10^5-7.3^9.80^4}\)
Những câu hỏi liên quan
tính \(\dfrac{^{7.12^8.5^4-6^9.20^4}}{6^{10}.10^5-7.3^9.80^4}\)
Ta có: \(\dfrac{7.12^8.5^4-6^9.20^4}{6^{10}.10^5-7.3^9.80^4}\)
\(=\dfrac{7.3^8.2^{16}.5^4-2^9.3^9.5^4.2^8}{2^{10}.3^{10}.2^5.5^5-7.3^9.2^{15}.2.5^4}\)
\(=\dfrac{2^{16}.5^4.3^8\left(7-2.3\right)}{2^{15}.3^9.5^4\left(15-7.2\right)}\)
\(=\dfrac{2^{15}.5^4.3^8.2}{2^{15}.3^8.3.5^4}\)
\(=\dfrac{2}{3}\).
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\(\dfrac{7.12^8.5^4-6^9.20^4}{6^{10}.10^5-7.3^9.80^4}\)
Giúp mình với!!!!!!!!
7.12^8.5^4-6^9.20^4=7.96.20-54.80=9120
6^10.10^5-7,3^9.80^4=60.50-65.7.320=3000
ket qua rut gon thanh dap so 456 phan 150
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Thực hiện phép tính
a)13 2/7: -3/7 + 25 3/7 : 3/7
b) 7.12^8.5^4-6^9.20^4/6^10.10^5-7.3^9.80^4
a)93/7:-3/7+178/7:3/7
3/7.(-93/7+178/7)=3/7.85/7=255/49
b)7.128.54-69.204/610.105-7.39.804
7.38.216.5429.39.54.28:210.310.25.55-7.39.216.54
=72.336.244.517
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dfrac{8^{14}}{4^4.64^5}
dfrac{9^{10}.27^7}{81^7.3^{15}}
left(dfrac{3}{10}right)^4.left(0,3right)^5.left(dfrac{10}{3}right)^{10}
dfrac{left(4^3right)^2.9^4}{6^7.8^2}
dfrac{4^8.9^4}{6^6.8^3}
3^6.left(dfrac{1}{3}right)^6.81^2.dfrac{1}{27^2} TÍNH
Đọc tiếp
\(\dfrac{8^{14}}{4^4.64^5}\)
\(\dfrac{9^{10}.27^7}{81^7.3^{15}}\)
\(\left(\dfrac{3}{10}\right)^4.\left(0,3\right)^5.\left(\dfrac{10}{3}\right)^{10}\)
\(\dfrac{\left(4^3\right)^2.9^4}{6^7.8^2}\)
\(\dfrac{4^8.9^4}{6^6.8^3}\)
\(3^6.\left(\dfrac{1}{3}\right)^6.81^2.\dfrac{1}{27^2}\) TÍNH
\(\dfrac{8^{14}}{4^4.64^5}=\dfrac{\left(2^3\right)^{14}}{\left(2^2\right)^4.\left(2^5\right)^5}=\dfrac{2^{42}}{2^8.2^{25}}=2^{42-\left(8+25\right)}=2^9\)
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\(\dfrac{9^{10}.27^7}{81^7.3^{15}}=\dfrac{\left(3^2\right)^{10}.\left(3^3\right)^7}{\left(3^4\right)^7.3^{15}}=\dfrac{3^{20}.3^{21}}{3^{28}.3^{15}}=\dfrac{3^{20+21}}{3^{28+15}}=\dfrac{3^{41}}{3^{41}.3^2}=\dfrac{1}{3^2}=\dfrac{1}{9}\)
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Bài 1: rút gọn
dfrac{16^3.3^{10}+120.6^9}{4^6.3^{12}+6^{11}}
left(dfrac{2}{3}right)^3.left(dfrac{-3}{4}right)^2.left(-1right)^{2013}
left(dfrac{1}{5}right)^{15}.left(dfrac{1}{4}right)^{20}
dfrac{9.5^{20}.27^9-3.9^{15}.25^9}{7.3^{29}.125^6-3.3^9.15^{19}}
dfrac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}
Đọc tiếp
Bài 1: rút gọn
\(\dfrac{16^3.3^{10}+120.6^9}{4^6.3^{12}+6^{11}}\)
\(\left(\dfrac{2}{3}\right)^3.\left(\dfrac{-3}{4}\right)^2.\left(-1\right)^{2013}\)
\(\left(\dfrac{1}{5}\right)^{15}\).\(\left(\dfrac{1}{4}\right)^{20}\)
\(\dfrac{9.5^{20}.27^9-3.9^{15}.25^9}{7.3^{29}.125^6-3.3^9.15^{19}}\)
\(\dfrac{4^5.9^4-2.6^9}{2^{10}.3^8+6^8.20}\)
\(\left(\dfrac{2}{3}\right)^3.\left(\dfrac{-3}{4}\right)^2.\left(-1\right)^{2013}=\dfrac{8}{27}.\dfrac{9}{16}.\left(-1\right)=-\dfrac{1}{6}\)
\(\left(\dfrac{1}{5}\right)^{15}.\left(\dfrac{1}{4}\right)^{20}=\dfrac{1}{5^{12}}.\dfrac{1}{4^{20}}=5^{-12}.4^{-20}=125^{-4}.1024^{-4}=\left(125.1024\right)^{-4}=128000^{-4}\)
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\(\dfrac{16^3.3^{10}+120.6^9}{4^6.3^{12}+6^{11}}=\dfrac{2^{12}.3^{10}+2^3.3.5.2^9.3^9}{2^{12}.3^{12}+2^{11}.3^{11}}=\dfrac{2^{12}.3^{10}+2^{12}.2^{10}.5}{2^{12}.3^{12}+2^{11}.3^{11}}=\dfrac{2^{12}.3^{10}\left(1+5\right)}{2^{11}.3^{11}\left(2.3+1\right)}=\dfrac{2.6}{3.7}=\dfrac{4}{7}\)
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So sánh 10^2000+5/10^2001-8 và 10^2000+6/10^2001-7
Tính 1+13^4+13^8+...+13^96+13^100/1+13^2+13^4+...+13^98+13^100+13^102
Tính A=2/5.7+5/7.12+9/19.28+11/28.39+1/39.40
......... là dấu cách nha các anh chị
1/ ( -6 -2) . ( -6 +2) ... 2/ ( 7.3 -3 ) : (-6) ... 3/ ( -5 + 9). (-4) ... 4 /72 : ( -6 . 2 + 4 ) ... 5/ -3 .7 -4 . ( -5 ) +1....6/ 18-10 : ( +2) -7.....7/ 15 : ( -5) . (-3) -8 .... 8/ ( 6.8 -10 : 5 ) + 3 . (-7)....
giúp mình bài này với!
(-6-2).(-6+2)
(7.3-3):(-6)
(-5+9).(-4)
72:(-6.2+4)
-3.7-4.(-5)+1
18-10:(+2)-7
15:(-5).(-3)-8
(6.8-10:5)+3.(-7)
giúp mình với !gấp lắm
* (-6 - 2) . (-6 + 2)
= -8 . -4
= 32
*(7 . 3 - 3) : (-6)
= 18 : (-6)
= -3
k cho mik nhe
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(-6-2).(-6+2)
=-8.(-4)
=32
(7.3-3):(-6)
=(21-3):(-6)
=18:(-6)
=-3
(-5+9).(-4)
=4.(-4)
=-16
72:(-6.2+4)
=72.(-12+4)
=72.8
-3.7-4.(-5)+1
=-21+20+1
=-1+1
=0
18-10:(+2)-7
=18-5-7
=13-7
=6
15:(-5).(-3)-8
=-3.(-3)-8
=9-8
=1
(6.8-10:5)+3.(-7)
=(48-2)+3.(-7)
=46+(-21)
=25
Xem thêm câu trả lời
bài 1, tính
a, [-6-2].[-6+2]
b, [7.3-3]:[-6]
c, [-5+9] .[-4]
d, 72:[-6.2+4]
e, -3.7-4.[-5]+1
f,18-10:[+2]-7
g, 15:[-5].[-3]-8
h, [6.8-10:5]+3.[-7]
a, (-6-2).(-6+2)
=(-6)2-22
=36-4
=32
Mấy câu kia dễ mà bn tự lm nha
a, ( -6 - 2 ) . ( -6 + 2 )
= -8 . ( -4 )
= 32
Mấy câu kia tương tự
#hoc_tot#