Viết gọn thành 1 lũy thừa a,3^3.225.4^5.5^4 b,36.30.125 c,25^4.2^8.10^3 d,27^2:25^3 e,15^8.9^4 nhanh giúp mk vs ạ
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a/108.28=(10.2)8=208
b/108:28=(10:2)8=58
c/254.28=(52)4.28=58.28=(5.2)8=108
d/158.94=158.(32)4=158.38=(15.3)8=458
e/272:253=(33)2:(52)3=36:56=(3:5)6=(3/5)6
a)
\(10^8.2^8=\left(10.2\right)^8=20^8\)
b)
\(10^8:2^8=\left(10:2\right)^8=5^8\)
c)
\(25^4.2^8=\left(5^2\right)^4.2^8=5^8.2^8=\left(2.5\right)^8=10^8\)
d)
\(15^8.9^4=15^8.\left(3^2\right)^4=15^4.3^4=45^4\)
e)
\(27^2:25^3=\left(3^3\right)^2:\left(5^2\right)^3=3^6:5^6=\left(\frac{3}{5}\right)^6\)
`@` `\text {Ans}`
`\downarrow`
`a,`
`4*8`
`= 2^2*2^3`
`=`\(2^{2+3}=2^5\)
`b,`
`4^5*4^4*4`
`=`\(4^{5+4+1}=4^{10}\)
`c,`
\(x^5\cdot x=x^{5+1}=x^6\)
`d,`
\(9\cdot27=3^2\cdot3^3=3^{2+3}=3^5\)
`e,`
\(243\div81=3^5\div3^4=3\)
`g,`
\(625\div25=5^4\div5^2=5^2\)
`@` `\text {Kaizuu lv uuu}`
a) \(4\cdot8=2^2\cdot2^3\)
\(=2^{2+3}=2^5=32\)
b) \(4^5\cdot4^4\cdot4\)
\(=4^{5+4+1}=4^{10}\)
c) \(x^5\cdot x\)
\(=x^{5+1}=x^6\)
d) \(9\cdot27=3^2\cdot3^3\)
\(=3^{2+3}=3^5\)
e) \(243:81=3^5:3^4\)
\(=3^{5-4}=3^1=3\)
g) \(625:25=5^4:5^2\)
\(=5^{4-2}=5^2=25\)
a) \(3^3.4^2\)
b) \(a^3+a^4\)
c) \(5^2\)
d) \(\frac{3^6.5}{4^2}\)
e) \(\frac{3^4.9^4}{9^4}=3^4\)
a: \(2x\left(x^2-3x+1\right)=2x^3-6x^2+2x\)
b: \(\left(x+2\right)^2-x^2=4x+4\)
c: \(\left(x+3\right)\left(x^2-3x+9\right)-x^3=27\)
a)
2 . 4. 16.8
= 2 . 4 .4 . 4 . 2 . 4
= 22 . 44
b) 33 . 225 . 45
= 33 . 45 . 5 . 45
= 33. 452. 5
Ps :Mấy câu sao giống zậy!
^^ Cbht!!!
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