\(\Leftrightarrow3^x\left(1+3-9\right)=-15\cdot3^{99}\)
\(\Leftrightarrow3^x=3^{100}\)
=>x=100
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1.a)(x+3/5).(x+1)<0
b)(x-1/3).(x+2/5)>0
2.B=(1-2/5).(1-2/7).(1-2/9).....(1-22/99)
tìm \(x\in Z\)
a) (x + 1) +(x + 3) + (x + 5) +.....+ (x + 99) = 0
b) (x - 3) + (x - 2) + (x - 1) + .....+ 10 + 11 = 0
1.a)(x+3/5x+1)<0
b)(x-1/3).(x+2/5)>0
2.B=(1-2/5).(1-2/7).(1-2/9).....(1-22/99)
Tìm x biết:
a) | 2x - 5 | + | y - 3 | = 0
b. | 2x - y + 1| ^3 + ( 2 - 3y )^2 = 0
c. | x + 1 / 1x2 | + |x + 1/2x3 | +.....+ |x+1/99+100 | = 100x
Tìm x biết:
a) | 2x - 5 | + | y - 3 | = 0
b. | 2x - y + 1| ^3 + ( 2 - 3y )^2 = 0
c. | x + 1 / 1x2 | + |x + 1/2x3 | +.....+ |x+1/99+100 | = 100x
Tìm x biết:
a) | 2x - 5 | + | y - 3 | = 0
b. | 2x - y + 1| ^3 + ( 2 - 3y )^2 = 0
c. | x + 1 / 1x2 | + |x + 1/2x3 | +.....+ |x+1/99+100 | = 100x
4 Tìm x :
(x+2).(4-x)=0 ; d) (x+1)+(x+3)+(x+5)+...+(x+99)=0
Tìm x
(101/99)0 .(27/64)9.x=(-3/4)32
(x-1).(x+2)<0
(x-3).(x+1/3)>0
|x-3,5|+|y-4/5|=0
Các bạn giúp mẹ với ạ
tìm x biết:
\(\frac{x-1}{99}-\frac{x+1}{101}+\frac{x-2}{98}-\frac{x+2}{102}+\frac{x-3}{97}-\frac{x+3}{103}+\frac{x-4}{96}-\frac{x+4}{104}=0\)
Tìm x:
a,x-3/97+x-2/98=x-1/99+x/100
b,x+2/327+x+3/326+x+4/325+x+5/324+xx349/5=0
c,(1/1.2+1/2.3+...+1/99.100)-2x=1/2