Factor the polynomial. a^5b - a
a^5b -a= a (a^(5b-1) -1) (distributive property)Now try backwards:a (a^(5b-1) -1)= a a^(5b-1) -a= a^1 a^(5b-1) -a= a^(5b-1+1) -a= a^(5b) -a (correct).The final answer is a* (a^(5b-1) -1)~
