Question

Factor completely: ​

Answer 1

`{3 + (1)/(5) x} \: * 3 - (1)/(5x)`

Explanation:

by factorization;

• 27 - 1/125 x^3
• (3)^3 - (1/5x)^3
• ( 3 + 1/5x ) ( 3 - 1/5x )

[ a^2 - b^2 = (a +b) × (a-b)