3ˣ⁺³ - 3ˣ⁺² = 162
3ˣ⁺².(3 - 1) = 162
3ˣ⁺².2 = 162
3ˣ⁺² = 162 : 2
3ˣ⁺² = 81
3ˣ⁺² = 3⁴
x + 2 = 4
x = 4 - 2
x = 2
3ˣ⁺³ - 3ˣ⁺² = 162
3ˣ⁺².(3 - 1) = 162
3ˣ⁺².2 = 162
3ˣ⁺² = 162 : 2
3ˣ⁺² = 81
3ˣ⁺² = 3⁴
x + 2 = 4
x = 4 - 2
x = 2
Bai 1 Tim x biet
a)162+(15-x0=125
b)x^3*x^2=2^7/4
c)5(x+27)=200
d)x-3=6-(19-23)
e)(x+32)-145=92
f) 2*3^x=162
g)9x-9=3^2/3
h)162-(15+x)=148
Bai 2 Thuc hien phep tinh
a)12+14+16+18+...+86+88
b)217+[43+(-217)+(-23)]
c) (-345)+[(-724)+345+224]
d)2^3*3-(12-36)
2 . 3x = 162
3x + 3x + 2 =810
2 x 3^x =162
Tìm x: 32. 6 3 x+1=162
Câu 3 :
a. x - 72 = 8
b. 2 . 3x = 162
c. 3x + 3x + 2 = 810
\(81:3^x=3\)
\(3^{x+1}.2=162\)
Tìm x
Tìm x, biết :
a. 70 - 5. ( x - 3 ) = 45
b. 10 + 2.x = 45 : 43
c. 60 - 3 .x - 2 = 51
d. 4.x - 20 = 25 : 23
e. 2x.4 = 16
f. 3x.3 = 243
g. 64.4x = 168
h. 2x.162 = 1024
Tim x:
a) (2x - 1)^3 = 8
b) (x - 1)^x+2 = (x - 1)^x + 4
c) 3^x - 1 + 5 . 3^3x -1 =162
d) x - 0,75 : 0,5 = (1/2)^3 .(-1)^6
tìm x 32 . 6 . 3x+1=162