1. Tính giá trị các biểu thức sau:

a) \(2^{15}\cdot9^4\) trên \(6^6\cdot8^3\)=.......

b) \(3^{10}\cdot11+3^{10}\cdot5\) trên \(3^9\cdot2^4\)= ........

c) \(8^{20}+4^{20}\) trên \(4^{25}+64^{25}\)=.......

d) \(2^{30}\cdot5^7+2^{13}\cdot5^{27}\) trên \(2^{27}\cdot5^7+2^{10}\cdot5^{27}\)=.......

      giúp với nha , nhớ trả lời đây đủ 

Bài 1: Tìm n

1/4*2/6*3/8*4/10*5/12*.....* 30/62*31/64=2^n

Bài 2: Tính

a) \(\frac{\left(-5\right)^{60}\cdot30^5}{15^5\cdot5^{61}}\)  

b)\(2^3+3\cdot\left(\frac{1}{3}\right)^0-2^{-2}\cdot4+\left[\left(-2\right)^3:\frac{1}{2}\right]\cdot8\)

(GỢI Ý CÂU B:\(^{2^{-2}=\frac{1}{2^2}}\)

Bài 3: Tìm x

a)\(^{2^x=16}\)

b)\(^{\left(\frac{x}{13}\right)^2=\frac{49}{169}}\)

c)\(\left(\frac{-1}{5}\right)^x=\left(\frac{-1}{125}\right)^3\cdot x^4=\frac{-16}{625}\)

d)\(^{6^{4-x}=216}\)

Bài 4:Tìm n

a)\(3^n\cdot3^{-2}=3^5\)

b)Tìm x:

1)\(\frac{2^{4-x}}{16^5}=32^6\)

2)\(^{9\cdot5^x=6\cdot5^6+3\cdot5^6}\)

3)\(\frac{2^3}{2^x}=4^5\)

Các bạn giúp mik!!!Mik sắp kiểm tra 45p r

Bài 2 : 

a) \(\frac{15^{30}}{45^{15}}\)=?

b) \(\frac{45^{10}\cdot5^{10}}{75^{10}}\)= ?

c) \(\frac{\left(0,8^5\right)}{\left(0,4^6\right)}\)=?

d)\(\frac{2^{15}\cdot9^4}{6^6\cdot8^3}\)=?

e) \(\frac{8^{10}+4^{10}}{8^4+4^{11}}\)=?

g)\(\frac{1^7}{7}\). 7⁷=?

h) \(\frac{90^3}{153}\)=?

i) 2⁶ . 5⁶ =?

1)Thực hiện phép tính

a) \(\dfrac{9^8\cdot5^6}{3^7\cdot27^3\cdot25^4}\) b) \(\dfrac{5^{20}\cdot6^{18}}{15^{20}\cdot4^{10}}\) c) \(\left(\dfrac{1}{3}\right)^{50}\cdot9^{25}-\left(\dfrac{2}{3}\right)^{100}:\left(\dfrac{8}{27}\right)^{33}\) d) \(\left(\dfrac{3}{8}\right)^{60}\cdot\left(\dfrac{2}{3}\right)^{60}:\left(\dfrac{1}{2}\right)^{119}\cdot\left(\dfrac{1}{2}\right)\)

2) Tìm x, biết:

a) \(\dfrac{x}{12}=\dfrac{5}{x}\) b)\(8^x=2^{2x+3}\) c)\(\dfrac{1}{2}\sqrt{\dfrac{1}{2}x-2}-\dfrac{2}{3}=\dfrac{1}{3}\)