Question

Разложите на множители: 1) 25x(кв)-9

Answer 1

25х^2 - 9 = (5х - 3)(5х + 3)

Answer 2

$25 {x}^{2} - 9 = {5}^{2} {x}^{2} - {3}^{2} = (5x {)}^{2} - {3}^{2} = (5x - 3)(5x + 3)$