Respostas
respondido por:
1
Boa noite!
Solução!
![2^{x+1}+2^{x+3}=20\\\\\\\
2^{x}.2^{1} +2^{x}.2^{3} =20\\\\\\\
2^{x}.(2^{1} +2^{3}) =20\\\\\\\
2^{x}(2+8)=20\\\\\\
2^{x}(10)=20\\\\\\
2^{x}= \dfrac{20}{10} \\\\\\
2^{x}=2^{1} \\\\\\
x=1](https://tex.z-dn.net/?f=2%5E%7Bx%2B1%7D%2B2%5E%7Bx%2B3%7D%3D20%5C%5C%5C%5C%5C%5C%5C%0A2%5E%7Bx%7D.2%5E%7B1%7D+%2B2%5E%7Bx%7D.2%5E%7B3%7D+%3D20%5C%5C%5C%5C%5C%5C%5C%0A+2%5E%7Bx%7D.%282%5E%7B1%7D+%2B2%5E%7B3%7D%29+%3D20%5C%5C%5C%5C%5C%5C%5C%0A2%5E%7Bx%7D%282%2B8%29%3D20%5C%5C%5C%5C%5C%5C%0A2%5E%7Bx%7D%2810%29%3D20%5C%5C%5C%5C%5C%5C%0A2%5E%7Bx%7D%3D+%5Cdfrac%7B20%7D%7B10%7D+%5C%5C%5C%5C%5C%5C%0A2%5E%7Bx%7D%3D2%5E%7B1%7D+%5C%5C%5C%5C%5C%5C%0Ax%3D1 "2^{x+1}+2^{x+3}=20\\\\\\\
2^{x}.2^{1} +2^{x}.2^{3} =20\\\\\\\
2^{x}.(2^{1} +2^{3}) =20\\\\\\\
2^{x}(2+8)=20\\\\\\
2^{x}(10)=20\\\\\\
2^{x}= \dfrac{20}{10} \\\\\\
2^{x}=2^{1} \\\\\\
x=1")
Boa noite!
Bons estudos!
Solução!
Boa noite!
Bons estudos!
Perguntas similares
7 anos atrás
7 anos atrás
7 anos atrás
9 anos atrás
9 anos atrás
9 anos atrás
9 anos atrás
9 anos atrás
9 anos atrás