`(7x-11)^3=2^5 .5^2+2.10^2`
`(7x-11)^3=800+200=1000`
`(7x-11)^3=10^3`
`7x-11=10`
`7x=10+11=21`
`x=21:7=3`
(7x-11)3=32.25+2.100
(7x-11)3=800+200
(7x-11)3=1000
7x-11=10
7x=21
x=21:7=3
\(\left(7x-11\right)^3=2^5\cdot5^2+2\cdot10^2\\ \left(7x-11\right)^3=800+200\\ \left(7x-11\right)^3=1000\\ \Leftrightarrow\left(7x-11\right)^3=10^3\\ \Rightarrow7x-11=10\\ 7x=21\\ x=3\)
`(7x - 11)^3 = 2^5 . 5^2 + 2 .10^2`
`(7x - 11)^3 = 32 . 25 + 2. 100`
`(7x - 11)^3 = 800 + 200`
``(7x - 11)^3 = 1000`
``(7x - 11) = 10`
`7x =10 + 11`
`7x = 21`
`x = 21 : 7`
`x = 3`
(7x-11)3=32.25+2.100
(7x-11)3=800+200
(7x-11)3=1000
7x-11=10
7x=21
x=21:7=3
#chúc bn học tốt ^^
(7x-11)3=32.25+2.100
(7x-11)3=800+200
(7x-11)3=1000
7x-11=10
7x=21
x=21:7=3
`(7x-11)^3=32.25+2.100`
`=>(7x-11)^3=800+200`
`=>(7x-11)^3=1000`
`=>7x-11=10`
`=>7x=21`
`=>x=21:7`
`=>x=3`
