Question

resolve into factors; x^3 y - 64y^4

Answer 1

Answer:

x^3y-64y^4

y(x^3-64y^3)

y{x^3-(4y)^3}

y(x-4y)(x^2+4xy+16y^2)

Answer 2

Answer:

Rewriting 64y^4 is 4y^3

X^3 - 4y^3

We use formula a^3 - b^3

= (a - b) (a^2 + ab + b^2)

(x - (4y)) (x^2 + x (4y) + (4y)^2)

= ( x - 4y) ( x^2 + 4xy + 16 y^2) answer