3) Tim x
1. 33x + 135 = 26.9 17. 124 + ( 118 - x ) = 217
2. 108. ( x - 43 ) = 0 18. 156 - ( x + 61 ) = 82
3. 39. ( x - 5 ) = 39 19. x - 280 : 35 = 5.54
4. ( x - 14 ) : 2 = 3 20. ( x - 120 ) : 35 = 5
5. ( 30 - 4x ) = 92 21. x - 120 : 30 = 40
6. 5 ( x + 7 ) = 0 22. ( x + 120 ) : 20 = 8
7. 25 ( x - 4 ) = 0 23. 2 ( x + 100 ) = 800
8. ( 34 - 2x ) ( 2x - 6 ) = 0 24. 5x + 10.9 = 990
9. ( 2019 - x ) ( 3x - 12 ) = 0 25. 3 ( x + 5 ) = 300
10. x : 13 = 41 26. 2x + 21 : 3 = 27
11. 1428 : x = 14
12. 4x : 17 = 0
13. 7x - 8 = 713
14. 8 ( x - 3 ) = 0
15. 0 : x = 0
16. ( x - 35 ) - 120 = 0
Luy Thua
1) Viet cac ket qua sau duoi dang mot luy thua
a) a. a. a. a. a. a. a
b) 2. 3. 2. 2. 3. 3. 2. 2. 2
c) $a^{3}$. $a^{2}$. $a^{5}$
d) $a^{6}$. $a^{12}$. a
e) $8^{3}$. $8^{6}$
f) 8. 16. 32
g) 3. 27. 81
h) 10. 100. 10000
i) $7^{5}$ : $7^{2}$
j) $7^{7}$ : $7^{5}$
k) $x^{12}$ : $x^{5}$ ( x $\neq$ 0 )
l) $x^{8}$ : $x^{3}$ ( x $\neq$ 0 )
cac bn oi giup mk vs sao cha ai giup mk the mk dang can gap cac bn oi giup mk ik bn nao xong nhanh va dung mk se cho ctrlhn va cam on va vote ma chi can cac bn giup mk thoi nha
Loga
Sinh Học lớp 12
