Question

упростить (b³-b²)*(b³+b²)-(1+b²)*(1-b²+b4)

Answer 1

(b³-b²)*(b³+b²)-(1+b²)*(1-b²+b4)=
   1b   *     b5  -    b2  *   b2=
           b6        -    b4=
                     b2