Question

Разложите на множители. а) 27k^3-m^3 b) 18a^4-2b^2

Answer 1

27k^3-m^3 =

=(3k-m)*(9k^2+3km+m^2)

============================================================

18a^4-2b^2=

=2(9a^4-b^2)=

=2(3a^2-b)*(3a^2+b)

Answer 2

)))