Question

answer the above question it's factorisation ​

Answer 1

Answer:

$25x {}^{2} - 1 \\ (5x) {}^{2} - (1 {)}^{2} \\ (5x + 1)(5x - 1)$

Answer 2

Answer:

(5x + 1)(5x - 1)

Step-by-step explanation:

$25 {x}^{2} - 1 \\ > > 25 = 5 \times 5 = {5 }^{2} < < \\ = ( {5x)}^{2} - {1}^{2} \\ > > {a}^{2} - {b}^{2} = (a +b )( a- b) < < \\ = (5x + 1)(5x - 1)$