Question

16(x+y)³-9(x+y) please answer this​

Answer 1

Step-by-step explanation:

(x+y) [{4(x+y)^2-3^2]

(x+y)[(4x+4y+3)(4x+4y-3)

Answer 2

Answer:

Step-by-step explanation:

using identity,

(x+y)³ = x^{3} + 3x^{2}y + 3xy^{2} + y^{3}

16(x+y)³-9(x+y) = 16(x^{3} + 3x^{2}y + 3xy^{2} + y^{3}) -9x -9y

now you just open bracket and get to the answer

i want you to work it out