Question

factorise125ycube-1​

Answer 1

Answer:

5(5y)^3 -1

i am not sure but hope this helps you

Answer 2

$125 {y}^{3} - 1 \\ = > (5y {)}^{3} - (1 {)}^{3} \\ = > \bf \color{purple}{ {a}^{3} - {b}^{3} = (a - b)( {a}^{2} + ab + {b}^{2)} } \\ = > \bf{lets \: put \: the \: values} \\ = > (5y - 1)((5y {)}^{2} + (5y \times 1) + ( {1)}^{2} ) \\ = > \boxed{(5y - 1)(25 {y}^{2} + 5y + 1) }$

Hope it helped