8. Write the equation of a polynomial f(x) that has a degree of 4, zeros at x = 1, 2, -2, and -1, and has a y-intercept of 4. Select as many answers as you want. f(x) = x^4 - 5x³+4 f(x) = (x-1)(x-2)(x+1)(x+2) f(x) = x^4 - x^3 + x^2 - x^1 f(x) = (x-1)²(x-2)²

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