a, \(4^3.5^3=\left(4.5\right)^3=20^3=8000\)
b, \(6^3.5^3=\left(6.5\right)^3=30^3=27000\)
c, \(8^2.5^2=\left(8.5\right)^2=40^2=1600\)
d, \(125^3.8^3=\left(125.8\right)^3=1000^3\)
e, \(5^2.6^2.3^2=\left(5.6.3\right)^2=90^2\)
Tính
A=\(\dfrac{4.5^{10}.5^{10}}{75^{10}}\) B=\(\dfrac{\left(0,8\right)^5}{\left(0,4\right)^6}\)
C=\(\dfrac{2^{15}.9^4}{6^6.8^3}\) D=\(\dfrac{8^{10}+4^{10}}{8^4+4^{11}}\)
Làm hộ mk nha làm đk câu nào thì làm nha . Mk đang cần gấp AI xg thì tớ tick cko !!!
a,\(\dfrac{5^4.20^4}{25^5.4^5}\)
b,\(\dfrac{2^7.9^3}{6^5.8^2}\)
c,\(\dfrac{45^{10}.5^{20}}{75^5}\)
d,\(\left(0,8\right)^5\)
e,\(\dfrac{2^{15}.9^4}{6^6.8^3}\)
f,\(\dfrac{8^{20}+4^{20}}{4^{25}+64^5}\)
Tính
a, A = \(\dfrac{16^3.3^{10}+120.6^9}{4^6.3^{12}+6^{11}}\)
b, B = \(\left(\dfrac{3}{7}.\dfrac{4}{15}+\dfrac{1}{3}.9^{15}\right).\dfrac{1}{3}.\dfrac{6^8}{12^4}\)
c, C = \(\dfrac{10^4.81-16.15^2}{4^4.675}\)
Bài 1: Tính:
\(a,\left(0,25\right)^3.32\) \(b,\left(0,125\right)^3.512\) \(c,\dfrac{8^2.4^5}{2^{20}}\) \(d,\dfrac{81^{11}.3^{17}}{27^{10}.9^{15}}\)
Bài 2: Tìm giá trị nhỏ nhất của các biểu thức sau:
\(a,A=\left|x-\dfrac{3}{4}\right|\) \(b,B=1,5+\left|2-x\right|\) \(c,A=\left|2x-\dfrac{1}{3}\right|+107\) \(d,M=5\left|1-4x\right|-1\)
Bài 3: Tìm giá trị lớn nhất của biểu thức sau:
\(a,C=-\left|x-2\right|\) \(b,D=1-\left|2x-3\right|\) \(c,D=-\left|x+\dfrac{5}{2}\right|\)
(mn giải giúp mk với, thanks mn nhìu!)
1) Viết kết quả dưới dạng một lũy thừa
a)\(4^{13}.5^{26}\)
b)\(27^{15}:9^{10}\)
c)\(\left(0,125\right)^3.512\)
d)\(9^{20}:\left(0,375\right)^{40}\)
e)\(81.2^8\)
2)Tính
a)\(\left(\dfrac{1}{2}\right)^3.\left(\dfrac{2}{3}\right)^2\)
b)\(7^{2015}.\left(\dfrac{1}{4}\right)^{2014}\)
c)\(\left(\dfrac{1}{2}\right)^3:\left(\dfrac{1}{2}\right)^6\)
d)\(\dfrac{4^2.4^3}{2^{10}}\)
e)\(\dfrac{\left(0,6\right)^5}{\left(0,2\right)^6}\)
f)\(\dfrac{3^3.\left(0,5\right)^5}{1,5^4}\)
g)\(\dfrac{2^7.9^3}{6^5.8^2}\)
i)\(\dfrac{6^3+3.6^2.3^3}{-13}\)
k)\(2:\left(\dfrac{1}{2}-\dfrac{2}{3}\right)^3\)
l)\(0,5^5.32\)
m)\(\left(-0,125\right)^5.80^5\)
n)\(\left(0,25\right)^3.64\)
o)\(\left(-0,02\right)^5.\left(0,01\right)^5\)
3)Tìm giá trị của x sao cho
a)\(x^2=3^2\)
b)\(x^3=2^3\)
c)\(x^4=16\)
Help me tối nay1/8 18h mik đi hc rồi
b) -x - 2 = \(\dfrac{5}{4}\) c) \(\dfrac{4}{3}-\left(x-\dfrac{1}{5}\right)=\left|\dfrac{-3}{10}+\dfrac{1}{2}\right|-\dfrac{1}{6}\) d) \(\dfrac{1}{3}-\left(\dfrac{2}{3}-x+\dfrac{5}{4}\right)=\dfrac{7}{12}-\left(\dfrac{5}{2}-\dfrac{13}{6}\right)\)
tim x , biet :
a) x + \(\dfrac{3}{10}\)= \(\dfrac{-2}{5}\)
b) x + \(\dfrac{5}{6}\) = \(\dfrac{2}{5}\) - \(\left(-\dfrac{2}{3}\right)\)
c) \(1\dfrac{2}{5}\) x + \(\dfrac{3}{7}\) = \(-\dfrac{4}{5}\)
d) \(\left[x+\dfrac{3}{4}\right]-\dfrac{1}{3}=0\)
e) \(\left[x+\dfrac{4}{15}\right]-\left[-3,75\right]=-\left[-2,15\right]\)
f) \(\left(x-2\right)^2=1\)
g) \(\left(2x-1\right)^3=-27\)
h) \(\dfrac{x-1}{-15}=\dfrac{-60}{x-1}\)
i) x : \(\left(\dfrac{-1}{2}\right)^3=\dfrac{-1}{2}\)
j) \(\left(\dfrac{3}{4}\right)^5.x=\left(\dfrac{3}{4}\right)^7\)
k) \(8^x:2^x=4\)
1. \(25\dfrac{1}{7}:\left(-\dfrac{5}{7}\right)-15\dfrac{1}{7}:\left(-\dfrac{5}{7}\right)+\dfrac{4}{5}\) 3. \(2\dfrac{2}{3}:\left\{\left[\left(3,72-0.02\right)\dfrac{10}{37}\right]:\dfrac{5}{6}+2,8\right\}-\dfrac{7}{15}\)
2. \(\left(3+\dfrac{4}{5}-\dfrac{5}{12}\right)\left(\dfrac{6}{7}-\dfrac{3}{5}\right)^2\)
4.23+3.\(\left(-\dfrac{1}{2}\right)^2\)-22.4+\(\left[\left(-2\right)^2:\dfrac{1}{2}\right]\)
Tìm x
1) \(\left(\dfrac{1}{16}\right)^x=\left(\dfrac{1}{8}\right)^6\) 2) \(\left(\dfrac{1}{16}\right)^x=\left(\dfrac{1}{8}\right)^{36}\) 3) \(\left(\dfrac{1}{81}\right)^x=\left(\dfrac{1}{27}\right)^4\)
4) \(\left(\dfrac{4}{9}\right)^x=\left(\dfrac{8}{27}\right)^{10}\) 5) \(2^x=4^5.4^3\) help me !!!!
