Giúp tui vs
Tính:
1) 6.(\(\frac{2}{3}\))\(^3\)-3. (\(\frac{2}{3}\))\(^3\)-2. (-\(\frac{2}{3}\))+4
2) (\(\frac{2}{3}\))\(^3\)-(\(\frac{3}{4}\))\(^2\).(-1)\(^5\)
3) \(\frac{2^3+3.2^6-4^3}{2^3+3^2}\)
4) \(\frac{4^6.9^5+6^9.12^0}{8^4.3^{12}-6^{11}}\)
5) \(\frac{5^2.20^3-5^4.20^3+5^7.4^5}{20+5^3.4^5}\)
Giúp mình nha. Cảm ơn các bạn trước
Bài 1: Tính giá trị các biểu thức sau
a,\(\left[2^{-3}-\left(\frac{3}{4}\right)^{-4}.\left(-\frac{1}{2}\right)^2\right]:\left[5-3\left(\frac{4}{15}\right)^0\right]^{-2}\)
b, \(\frac{2^3+3.2^6-4^3}{2^3+3^2}\)
c, \(\frac{5^5.20^3-5^4.20^3+5^7.4^5}{\left(20+5\right)^3.4^5}\)
d, \(\frac{4^6.9^5+6^9.120}{8^4.3^{12}-6^{11}}\)
e, \(\frac{5.\left(3.7^{15}-19.7^{14}\right)}{7^{16}+3.7^{15}}\)
f, \(\frac{3^3.\left(0,5\right)^5}{\left(1,5\right)^4}\)
Mk cần gấp
Giúp mk với mk cảm ơn ạ
a)(x-\(\dfrac{3}{4}\))\(^2\)=0
b)(x+\(\dfrac{4}{9}\))\(^2\)=\(\dfrac{49}{144}\)
a ) (-\(\)\(\dfrac{4}{3}\)x + \(\dfrac{1}{2}\))2 = \(\dfrac{1}{4}\)
b) 3 x + 3 x+2= 20
c) ( \(\dfrac{1}{2}\)) x+ (\(\dfrac{1}{2}\))x+2= \(\dfrac{5}{4}\)
Giúp mk với !!! Ngày mai mk làm kiểm tra rồi !!! PLEASE
bài 3: giúp mình với làm ơn
a, 1,25 . \(\left[-3\frac{3}{8}\right]\) b, \(\frac{-9}{34}.\frac{17}{4}\)
c, \(\frac{-20}{41}.\frac{-4}{5}\) d, \(\frac{-6}{7}.\frac{21}{2}\)
bài 4:
a, \(\frac{-5}{2}.\frac{3}{4}\) b,\(4\frac{1}{5}:\left[-2\frac{4}{5}\right]\)
c,\(1,8:\left[\frac{-3}{4}\right]\) d,\(\frac{17}{15}:\frac{4}{3}\)
tính
a) \(\left(\dfrac{2}{5}+\dfrac{3}{4}\right)^2\)
b) \(\left(\dfrac{5}{4}-\dfrac{1}{6}\right)^2\)
giúp mk vs các pạn ơi mai mk hk rùi
1. Tính: \(\dfrac{45^{10}.5^{20}}{75^{15}}\)
2. Tìm x thuộc Z biết: \(5^x+5^{x+2}=650\)
các bn giúp mk vs nha mk tik cho
Bài 1: So sánh: a) (\(\frac{1}{2}\))\(^2\) và (\(\frac{1}{2}\))\(^5\) b) (2,4)\(^3\) và (2,4)\(^2\) c) (-1\(\frac{1}{2}\))\(^2\) và (-1\(\frac{1}{2}\))\(^3\) d) 2\(^{225}\) và 3\(^{150}\)
Bài 2: Tính: a) 25\(^3\) : 5\(^2\) b) (\(\frac{3}{7}\))\(^{21}\) : (\(\frac{9}{49}\))\(^6\) c) 3- (-\(\frac{6}{7}\))\(^0\) + (\(\frac{1}{2}\))\(^2\):2 d) 9.3\(^3\).\(\frac{1}{81}\).3\(^2\) e) 4.2\(^5\): (2\(^3\).\(\frac{1}{16}\)) g) 3\(^2\).2\(^5\).(\(\frac{2}{3}\))\(^2\) h) (\(\frac{1}{3}\))\(^2\).\(\frac{1}{3}\).9\(^2\)
Gúp mk vs, mk cần gấp ạ
a) \(\dfrac{790^4}{79^4}\)
b) \(\dfrac{3^2}{0,375^2}\)
c) \(3^2.\dfrac{1}{243}.81^2.\dfrac{1}{3^3}\)
d)\(\left(4.2^5\right):\left(2^3.\dfrac{1}{16}\right)\)
các bn giup mk vs nha