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Math Help - Algebraic q

  1. #1
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    Algebraic q

    Show that x + 2c is a factor of f (x) = xcubed + 7cxsquared + 11csquared(x) + (2c)cubed, c a constant, and find the three roots of f(x) = 0.
    Can someone show how to do this q please. Thanks!
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  2. #2
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    Quote Originally Posted by Detanon View Post
    Show that x + 2c is a factor of f (x) = xcubed + 7cxsquared + 11csquared(x) + (2c)cubed, c a constant, and find the three roots of f(x) = 0.
    Can someone show how to do this q please. Thanks!
    hi
    if x+2c is a factor of f,then -2c is a root of f.
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