Question

give the answer of no.21 plz​

Answer 1

Answer:

63(p4 +5p3-24p2)/9p(p+8)

63(p4+8p3-3p3-24p2)/9p(p+8)

63(p3(p+8)-3p2(p+8))/9p(p+8)

63(p3-3p2)(p+8)/9p(p+8)

63(p(p2-3p))/9p

63p(p2-3p)/9p

7p(p2-3p)

7p3-21p2