Question

simplify (x+4y)power3 -(x-4y)power3​

Answer 1

Answer:

a3-b3 = (a-b)(a2+b2+ab)

(X+4y-x+4y)(x2+16y2+8xy+x2+16y2-8xy+x2-16y2)

8y(3x2+16y2)

it is answer ok

Answer 2

Answer:

Evaluate :(x+4y)³ = x³+12×2y+48xy²+64y³ Evaluate :(x-4y)3 = x³-12×2y+48xy²-64y³

Pulling out like terms:

24x2y + 128y³ = 8y(3x2 + 16y²)

Final result :

8y(3x2 + 16y²)