Question

(3) 25(x+y) - 16 (x- y)^2​

Answer 1

Step-by-step explanation:

25(2x + y)2 – 16(x – y)2

= [5(2x + y)]2 – [4(x – y)]2

= (10x + 5y)2 – (4x – 4y)2

= (10 x + 5y + 4x – 4y) (10x + 5y – 4x + 4y)

= (14x + y) (6x + 9y)

= (14x + y) 3(2x + 3y)

= 3 (14x + y) (2x + 3y)