Tính
C= \(\frac{30.4^7.3^{29}-5.14^5.2^{12}}{54.6^{14}.9^7-12.8^5.7^5}\)
Rút gọn biểu thức:
a) \(\frac{2.8^4.27^2+4.6^9}{2^7.6^7+2^7.40.9^4}\)
b) \(\frac{\left(\frac{2}{3}\right)^3.\left(\frac{-3}{4}\right)^2.\left(-1\right)^5}{\left(\frac{2}{5}\right)^2.\left(\frac{-5}{12}\right)^3}\)
1, Tính
\(A=\left(-3+\frac{3}{4}-\frac{1}{3}\right):\left(5+\frac{2}{5}-\frac{2}{3}\right)\)
\(B=\left(\frac{3}{5}-\frac{4}{15}\right).\left(\frac{2}{7}-\frac{3}{14}\right)-\left(\frac{5}{9}-\frac{7}{27}\right).\left(1-\frac{3}{5}\right)+\left(1-\frac{11}{12}\right).\left(1+\frac{11}{12}\right)\)
1/Rút gọn biểu thức
a/ B=\(\dfrac{4^6.9^5+6^9.120}{8^4.3^{12}-6^{11}}\)
b/C= \(\dfrac{5.4^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)
c/D=\(\dfrac{49^{24}.125^{10}.2^8-5^{30}.7^{49}.4^5}{5^{29}.16^2.7^{48}}\)
2/tìm x biết
a/9x+1-5.32x= 324
b/\(\dfrac{1}{3}\).3x=7.32.92-2.3x
c/\(\dfrac{1}{5}\).2x+\(\dfrac{1}{3}\).2x+1=\(\dfrac{1}{5}\).27+\(\dfrac{1}{3}\).28
d/ 3x+1+2x.3x- 18x - 27=0
Giups mik nhanh với, mai mik đi hc rùi , bạn nào làm đc mik tick cho
Tính :
A= \(\frac{5.4^{15}-9^9-4.3^{20}.8^9}{5.2^{10}.6^{19}-7.2^{29}.27^6}\)
Rút gọn biểu thức sau:
\(\frac{2^{20}.27^3+30.4^9.9^4}{6^9.4^5+12^{10}}\)
Bài 1 : Tính
A = \(\frac{81^4.3^{10}.27^5:3^{12}}{3^{18}:9^3.243^2}\)
B = \(\frac{2.55^2-9.55^{21}}{25^{10}}:\frac{5.\left(3.7^{15}-19\cdot7^{14}\right)}{7^{16}+3.7^{15}}\)
tính
a,\(12^n:2^{2n}\)
b,\(3^8:3^4+2^2.2^3\)
c,\(\left(7^{1997}-7^{1995}\right).\left(7^{1994}.7\right)\)
d,\(4^{14}.5^{28}\)
e,\(3.4^2-2.3^2\)
m,\(18^3:9^3\)
n,\(\left(2^8+8^3\right):\left(2^5.2^3\right)\)
f,\(16.64.8^2:\left(4^3.2^5.16\right)\)
p,\(5.2^9.6^{10}-7.2^{29}.27^6\)
ai nhanh và đúng mk tick cho
sớm nhất có thể nhé
Tính
a. \(\frac{\left(13\frac{1}{4}-2\frac{5}{7}-10\frac{5}{6}\right).230\frac{1}{25}+46\frac{3}{4}}{\left(1\frac{3}{10}+\frac{10}{3}\right):\left(12\frac{1}{3}-14\frac{2}{7}\right)}\)