Mathematics

Question

Please help me with polynomials. What is the zeros of x^2 + 2x + 4

2 Answer

  • Answer:

      -1 ± i√3

    Step-by-step explanation:

    You can rearrange the expression to vertex form:

      x^2 +2x +1 +3

      (x +1)^2 +3

    You want to find the values of x that make this zero:

      (x +1)^2 +3 = 0 . . . . . . . set the expression equal to zero

      (x +1)^2 = -3 . . . . . . . . . subtract 3 to get the square alone

      x +1 = ±√(-3) = ±i√3 . . .take the square root

      x = -1 ±i√3 . . . . . . . . . . subtract 1

    The zeros are the complex numbers -1+i√3 and -1-i√3.

  • The slove this proportion used to 2•5
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