Factor completely. y2 - xy - 56x2

For this case we have the following expression:

y2 - xy - 56x2

Rewriting we have the factored expression, which is given by:

(7x + y) (y-8x)

Checking we have:

7xy - 56x ^ 2 + y ^ 2 - 8xy

y ^ 2 - xy - 56x ^ 2 (OK)

Answer:

The factored expression is given by:

y2 - xy - 56x2 = (7x + y) (y-8x)