Respuesta:
[tex]b \times 2(b + c + d) - 2c \times (b + c + d)[/tex]
[tex]2 {b}^{2} + 2bc + 2bd - 2bc - 2 {c}^{2} - 2cd[/tex]
[tex]2 {b}^{2} + 2bd - 2 {c}^{2} - 2cd[/tex]
Explicación paso a paso:
ᴇsᴘᴇʀᴏ ᴛᴇ ᴀʏᴜᴅᴇ ǫᴜᴇ ᴛᴇɴɢᴀs ᴜɴ ʟɪɴᴅᴏ ᴅɪᴀ
ᴄᴏʀᴏɴɪᴛᴀ ʏ ᴄᴏʀᴀᴢóɴ ᴘᴏʀғᴀᴠᴏʀ
