11+3x=5X-9
3x-5x=-11-9
-2X=-20
2x -20
--- = -----
2 2
x=-20
----
2
x= -10
1) =√16=4
2) =√(2/18)=√(1/9)=1/3
3) =√9 *√3*√3 =3*3=9
4) = <u>√4* √13 </u>=<u> 2 </u>
√9* √13 3
5) = √4 * √7 *√7=2*7=14
6) = <u> √23 </u> = <u>1 </u>= 0.1
√23*√100 10
7) = √13 * √13 *√4 = 13*2 =26
8) = <u>√5 * √25 * √100</u> = √25 = 5
√5 * √100