Question

factorise the following :-

3a² - 108b²​

Answer 1

Step-by-step explanation:

$3 {a}^{2} - 108 {b}^{2} \\ \\ 3( {a}^{2} - 36 {b}^{2} ) \\ \\ 3[ {(a)}^{2} - {(6b)}^{2} )] \\ \\ 3(a + 6b)(a - 6b)$

Answer 2

Answer:

3(a+6b)(a-6b)

Step-by-step explanation:

3a² - 108b²

taking, 3 common

= 3 (a² - 36b²)

using identity A²-B² = (A+B)(A-B)

= 3(a+6b)(a-6b)