Factorize cubic polynomial: Write the factored form of 10z3−5z2. Factor out 5z2 from 10z3 and 5z2. 10z3−5z2=5z2(2z−1)
Factorize linear polynomial: Write the factored form of 18z−9.Factor out 9 from 18z and 9.18z−9=9(2z−1)
Combine factorized polynomials: We found:10z3−5z2=5z2(2z−1)18z−9=9(2z−1)Write the factored form of 10z3−5z2+18z−9.Factor out (2z−1) from 5z2(2z−1) and 9(2z−1).So, the factored form of 10z3−5z2+18z−9 is: (5z2+9)(2z−1)