j) \(x^{17}:x^{12}\)
\(=x^{17-12}\)
\(=x^5\)
k) \(x^8:x^5\)
\(=x^{8-5}\)
\(=x^3\)
r) \(a^5:a^5\)
\(=a^{5-5}\)
\(=a^0\)
\(=1\)
l) \(x^4:x\)
\(=x^{4-1}\)
\(=x^3\)
m) \(x^7:x^6\)
\(=x^{7-6}\)
\(=x\)
n) \(x^9:x^9\)
\(=x^{9-9}\)
\(=x^0\)
\(=1\)
o) \(a^{12}:a^5\)
\(=a^{12-5}\)
\(=a^7\)
p) \(a^8:a^6\)
\(=a^{8-6}\)
\(=a^2\)
q) \(a^{10}:a^7\)
\(=a^{10-7}\)
\(=a^3\)
r) \(1024:4\)
\(=2^{10}:2^2\)
\(=2^{10-2}\)
\(=2^8\)
t) \(512:2^3\)
\(=2^9:2^3\)
\(=2^{9-3}\)
\(=2^6\)
`@` `\text {Ans}`
`\downarrow`
Hnhu ban nãy b cũng đăng r mà nhỉ ;-;?
`j)`
\(x^{17}\div x^{12}=x^{17-12}=x^5\)
`k)`
\(x^8\div x^5=x^{8-5}=x^3\)
`r)`
\(a^5\div a^5=a^{5-5}=a^0=1\)
`l)`
\(x^4\div x=x^{4-1}=x^3\)
`m)`
\(x^7\div x^6=x^{7-6}=x\)
`n)`
\(x^9\div x^9=x^{9-9}=x^0 =1\)
`o)`
\(a^{12}\div a^5=a^{12-5}=a^7\)
`p)`
\(a^8\div a^6=a^{8-6}=a^2\)
`q)`
\(a^{10}\div a^7=a^{10-7}=a^3\)
`r(2),`
\(1024\div4=2^{10}\div2^2=2^8\)
`t)`
\(512\div2^3=2^9\div2^3=2^6\)
