Question

factorise the sum...........​

Answer 1

Step-by-step explanation:

(i)16a²-25/9a²

=(4a)²-(5/3a)²

={4a-(5/3a)}{(4a+(5/3a)}

(ii)(x+2)²-(x+4)²

=x²+4x+4-x²-8x-16

=-4x-12