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Find the zeros of f(x) = x^4 - 18x^2 + 81. Then sketch a graph of the function.

2. Find the zeros of f(x) = x^4 - 18x^2 + 81. Then sketch a graph of the function.

Answer

Zeros of the function:

  1. Factor the polynomial: f(x) = x^4 - 18x^2 + 81 can be rewritten as (x^2 - 9)^2.
  2. Set each factor equal to zero: x^2 - 9 = 0.
  3. Solve for x: x^2 = 9, so x = ±3.
  4. The zeros of the function are x = 3 and x = -3.

Graph of the function:

The graph is a parabola opening upwards with vertex at the origin, and it touches the x-axis at x = 3 and x = -3.

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