a) (0,125)mũ 3. 8 mũ 3
b) (-39)mũ 4: 13 mũ 4
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a)5^26=5^13.2=10^13
10^13x4^13=40^13
b)27^15=(3^3)^15+3^45
9^10=(3^2)^10=3^20
3^20x3^45=3^65
c)5^12=5^3.4=(5^4)^3=625^3
0,125^3.625^3=625,125^3
d)0,375^40=0,375^2.20=(0.375^2)^20=0,750^20
9^20:0,750^20=1.0012^20
k me
Bài 8:
a: \(\left(\dfrac{2}{5}+\dfrac{3}{4}\right)^2=\left(\dfrac{8+15}{20}\right)^2=\left(\dfrac{23}{20}\right)^2=\dfrac{529}{400}\)
b: \(\left(\dfrac{5}{4}-\dfrac{1}{6}\right)^2=\left(\dfrac{15}{12}-\dfrac{2}{12}\right)^2=\left(\dfrac{13}{12}\right)^2=\dfrac{169}{144}\)
\(a,\left(3^2\cdot5^2\cdot4^3\right):\left(8\cdot3^2\right)\)
\(=\frac{3^2\cdot5^2\cdot4^3}{8\cdot3^2}\)
\(=\frac{3^2\cdot5^2\cdot2^6}{2^3\cdot3^2}\)
\(=5^2\cdot2^3\)
\(=25\cdot8=200\)
\(b,\left(2^{10}\cdot13+2^9\cdot130\right):\left(2^8\cdot104\right)\)
\(=\frac{2^{10}\cdot13+2^9\cdot130}{2^8\cdot104}\)
\(=\frac{2^9\cdot\left(2\cdot13+130\right)}{2^8\cdot2^3\cdot13}\)
\(=\frac{2^9\cdot156}{2^{11}\cdot13}\)
\(=\frac{2^9\cdot2^3\cdot3\cdot13}{2^{11}\cdot13}\)
\(=\frac{2^{12}\cdot3\cdot13}{2^{11}\cdot13}\)
\(=2.3=6\)
a) 0,1253.83
=(0,125.8)3
=13
=1.
b)(-39)4:134
=394:134
=(39:13)4
=34
=81
a)0,1253 . 83 = (0,125 . 8)3 = 13 = 1
b) (-39)4 : 134 = ((-39 ): 13 )4 = 34 = 81