Question

plzz solve this.........factorise 9(x+a)^2-4x^2

Answer 1

9(x+a)²-4x²
{3(x+a)}²-(2x)²
{3(x+a)+2x}{3(x+a)-2x}
(5x+3a)(x+3a)

Answer 2

9(x+a)^2-4x^2
=(3(x+a))^2-(2x)^2
=(3x+3a-2x)(3x+3a+2x)
=(x+3a)(5x+3a)

i hope u understand 
plz mark brainliest