Question

1)5^2.x.5^x=125

2)\(\frac{1}{2}\).2^x+2^x+2=2⁸+2⁵0

Answer 1

1)\(5^{2.x}.5^x=125\)

   \(5^{2x+x}=5^3\)

 =>\(2x+x=3\)

      \(x.\left(2+1\right)=3\)

        \(x.3=3\)

           \(x=1\)

Answer 2

mk chua hieu lam cau hai chep lai cau 2 cho mk nhe

Answer 3

ko có số 0 ở cuối cùng 

Answer 4

\(\frac{1}{2}.2^x+2^{x+2}=2^8+2^5\)

\(\frac{1}{2}.2^x+2^x.2^2=2^8+2^5\)

\(\left(\frac{1}{2}+4\right).2^x=2^8+2^5\)

\(\frac{9}{2}.2^x=288\)

       \(2^x=288:\frac{9}{2}\)

        \(2^x=64\)

         \(2^x=2^6\)

\(=>x=6\)

Answer 5

k cho mk nhe