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Algebra 2

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How do I solve polynomial equation by finding all complex roots?

The problem is:
factor each expression and find all complex roots of x^3+64

I got as far as x^3+64=(x+4)(x^2-4x+16)
Now how do i find the roots of (x+4) and the roots of (x^2-4x+16)


  • Algebra 2 - ,

    the root of x+4=0 is x=-2

    the roots of the next can be solved by the quadratic equation..


    that gives you three roots.

  • Algebra 2 - ,

    When a trinomial is factored as (x + m)(x + n), what is the sum of m and n?

    A. The coefficient of the x-term of the trinomial
    B. The constant term of the trinomial
    C. The degree of the trinomial
    D. The coefficient of the x2-term of the trinomial

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