Question

Factorise=16(x+y)²-25(x-3y)²

Answer 1

Answer:

(9x-11y)(-x+19y)

Step-by-step explanation:

16(x+y)^2-25(x-3y)^2

{4(x+y)+5(x-3y)}{4(x+y)-5(x-3y)}

(4x+4y+5x-15y)(4x+4y-5x+15y)

(9x-11y)(-x+19y)

Answer 2

Answer:

–(9x–11y) (x–19y)

Step-by-step explanation:

using formula