Question

${14^{x+2}\over7^x}=6272$

Answer 1

Explicação passo-a-passo:

${14^x.14^2\over7^x}=6272\\ \\ {14^x,196\over7^x}=6272\\ \\ {14^x\over7^x}=6272\div196\\ \\( {14\over7})^x=32\\ \\ (2)^x=32\\ \\ 2^x=2^5\\ \\ x=5$