Respuestas
Respuesta:eBook is an electronic version of a traditional print book THIS can be read by using a personal computer or by using an eBook reader. (An eBook reader can be a software application for use on a computer such as Microsoft's free Reader application, or a book-sized computer THIS is used solely as a reading device such as Nuvomedia's Rocket eBook.) Users can purchase an eBook on diskette or CD, but the most popular method of getting an eBook is to purchase a downloadable file of the eBook (or other reading material) from a Web site (such as Barnes and Noble) to be read from the user's computer or reading device. Generally, an eBook can be downloaded in five minutes or less
Explicación:
Álgebra: Parte de las matemáticas en la cual las operaciones aritméticas son generalizadas
empleando números, letras y signos. Cada letra o signo representa simbólicamente un número
u otra entidad matemática. Cuando alguno de los signos representa un valor desconocido se
llama incógnita.