36(a+b)^2 - 16 ( a-b)^2 factorise the following

1.	36(a+b)^2 - 16 ( a-b)^2 factorise the following
Answer» $\huge{\underline{\underline{\red{♡Solution→}}}}$ $36( {a + b)}^{2} - 16( {a - b)}^{2}$ $( {6(a + b))}^{2} - ( {4(a - b))}^{2}$ USE the IDENTITY → ${a}^{2} - {b}^{2} = (a + b)(a - b)$ $(6(a + b) + 4(a - b))(6(a + b) - 4(a - b))$ $= (6a + 6b + 4a - 4b)(6a + 6b - 4a + 4b) \\ = (10a + 2b)(2a + 10b)$ $= 2(5a + b) \times 2(a + 5b)$ $\boxed{= 4(5a + b)(a + 5b)}$ __________________________ *Mark as BRAINLIEST !! ✨✨*

Answer»

$\huge{\underline{\underline{\red{♡Solution→}}}}$