b: Ta có: \(x+3x-2=10\)
\(\Leftrightarrow4x=12\)
hay x=3
\(a,\)\(3^{x-1}+5.3^{x-1}=162\)
\(b,x-2+3x=10\)
Giúp mik với nhaaa !!! X -2 câu b là 2 trường hợp đó !! AI làm hết mik tik cho 2 tik !!
tìm x
a,3x-1+5.3x-1=162
b,3x+x2=0
c,(x-1).(x-3)<0
a) (2x-1)^3=27
b) (2x-1)^4=81
c) (x-2)^5=-32
d) (3x-1)^4=(3x-1)^6
đ) 5^x +5^x+2=650
g) 3^x-1 +5.3^x-1=162
tìm x biết
a, (3x+1)3 = -216
b, 3x-1+5.3x-1=162
Tìm x biết :
a) / 2x + 3 / = x + 2
b) 3x-1 + 5.3x-1 =162
a) 5x + 5x+2 = 650
b) 3x-1 + 5.3x-1 = 162
a)\(5^x+5^{x+2}=650\)
b)\(3^{x-1}+5.3^{x-1}=162\)
Tìm x,y
a) \(\left(x-5\right)^2=\left(1-3x\right)^2\)
b)\(\left(3x-1\right)^{100}+\left(2y+1\right)^{200}\le0\)
Tìm n
\(\frac{1}{3}.3^n+5.3^{n-1}=162\)
Giup tớ với mấy bạn ơi !!!!!!!!
Tìm x, biết :
a) \(3^{x-1}+5.3^{x-1}=162\)
b) \(3x+x^2=0\)
c) \(\left(x-1\right)\left(x-3\right)< 0\)
