Question: I need help with these 1. Given /(x) =3x -9x +4x+12 , list all the possible rational zeros of the function. 2. Solve the equations:

I need help with these

1. Given /(x) =3x -9x +4x+12 , list all the possible rational zeros of the function. 2. Solve the equations: 3. Find the polynomial of the third degree with a) x-+5=0 integer coefficients and the leading coefficient of one, if the numbers 2 and 1+2/ are zeros of the b) x -6.x+13=0 polynomial. 4. Find all the zeros of the polynomial f(x)=x -x +2x -4x-8 given that -2i is a root

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