Rational Root Theorem

 $2x^5-8x^3+4x^2-6$  

According to the Rational Root Theorem, which are not possible rational roots for the above polynomial? Check all that apply.

 $x^4-x^3-31x^2+x+30$  

According to the Rational Root Theorem, which are not possible rational roots for the above polynomial? Check all that apply.

 $3x^6-5x^2-17x+8$  

According to the Rational Root Theorem, which are not possible rational roots for the above polynomial? Check all that apply.

 $x^4+2x^3-7x^2-20x-12=0$  
Solve the equation by finding all the zeros.

(a)  

 $x^4+9x^3+23x^2+3x-36=0$  
Solve by finding all the zeros.

(a)  

 $x^4-2x^3-7x^2+8x+12=0$  
Solve by finding all the zeros.

(a)  

 $x^4-3x^3-20x^2+84x-80=0$  

(a)