Using the representation of GF(8) given in Table B.3 on page 346 of Essentials of Error Control Coding, compute the following. (a) ⁴ + ² + + 1 (b) (³ + ²)(⁶ + ³) (c) ⁶(⁵ + ⁴) + ² (d) (³x² + x + 1)( ⁵x³ + x + ²)

Table B.3 The Galois field GF (23) generated by pi(X)=1+X+X3