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Basic Algebra

In Algebra one uses letters and numbers to represent quantities. The letter stands for an unknown number. i.e: [i]x[/i] + [i]x[/i] + [i]x[/i] = 3x or 3 [multiply] [i]x[/i] [code] [i]x[/i] [multiply] [i]x[/i] = [i]x[/i][squared] [/code] [code] 5[i]x[/i] [multiply] y = 5[i]x[/i][i]y[/i] [/code] 1[i]x[/i] is written as [i]x[/i]. 0[i]x[/i] is written as 0. [hr] [u]Algebraic Terms[/u] when letters and numbers are multiplied together the result is an [b]Algebraic Term[/b]. [img src='https://res.cloudinary.com/deylrqt2d/image/upload/v1489338243/algebraic_term_ly2ckz.svg'] [b]Further examples of Algebraic Terms and their components:[/b] [table] [tr] [td style='padding:10px;background-color:#222;color:#fff;']Term[/td][td style='padding:10px;']Sign[/td][td style='padding:10px;']Coefficient[/td][td style='padding:10px;']Variable[/td][td style='padding:10px;']Power[/td] [/tr] [tr] [td style='padding:10px;background-color:#222;color:#fff;']5x[sup]4[/sup][/td][td]+[/td][td]5[/td][td]x[/td][td]4[/td] [/tr] [tr] [td style='padding:10px;background-color:#222;color:#fff;']-4y[sup]3[/sup][/td][td]-[/td][td]4[/td][td]y[/td][td]3[/td] [/tr] [tr] [td style='padding:10px;background-color:#222;color:#fff;']7z[/td][td]+[/td][td]7[/td][td]z[/td][td]1[/td] [/tr] [tr] [td style='padding:10px;background-color:#222;color:#fff;']-12[/td][td]-[/td][td]12[/td][td]None[/td][td]1[/td] [/tr]