a) 2x = 16 b) 3x + 1 = 9x
2x = 24 3x + 1 = 32x
x = 4 x + 1 = 2x
x = 1
c) 23x + 2 = 4x + 2
23x + 2 = 22(x + 2)
3x + 2 = 2(x + 2)
3x + 2 = 2x + 4
x = 2
d) 32x - 1 = 243
32x - 1 = 35
2x - 1 = 5
2x = 6
x = 3
a) 2x = 16 b) 3x + 1 = 9x
2x = 24 3x + 1 = 32x
x = 4 x + 1 = 2x
x = 1
c) 23x + 2 = 4x + 2
23x + 2 = 22(x + 2)
3x + 2 = 2(x + 2)
3x + 2 = 2x + 4
x = 2
d) 32x - 1 = 243
32x - 1 = 35
2x - 1 = 5
2x = 6
x = 3
Tìm x biết:
a, 3 mũ x+1= 9 mũ x
b, 2 mũ 3x+2 = 4 mũ x+5
c,3 mũ 2x-1 = 243
1,3^2x-1=243
3^x+1=9
2^3x+2=4^x+5
bài 1 . Tìm x , biết
a) a.2x=16
b) 3 x+1 =9x
c) 23x+2=4x+5
d) 32x-1 =243
tìm x
3^x-1=1/243
81^-2x.27^x=9^5
2^x+2^x+3=144
1 Tìm nghiệm các đa thức sau :
a, A[x] = x^2 + 9
b, B[x] = x^2 - 9
c,C[x] = 2x^2 - 2
d, D[x] = 3x - 6
1.3x+1=9x
2. 23x+2=4x+5
3. 32x-1=243
Tìm x,y biết:
1) 3^X-1 = 1/243
2) 81^-2X x 27^X=9^5
3) ( x-y+3)^2 + (y-1)^2=0
a, (2x-3)2=16
b, (3x-2)5=-243
c, (x-7)x+1=(x-7)x+11
tìm x:
a) \(3^{x+1}=9^x\)
b) \(2^{3x+2}=4^{x+5}\)
c) \(3^{2x-1}=243\)
\(\text{nhanh lên}\)