Is this correct? what did i do wrong if it's incorrect
?

Unfortunately, it's incorrect. You were incorrect from the beginning.

Factor x^3(2x−y)+xy(2x−y)^2

2x^4+3x^3y−4x^2y^2+xy^3

=x(2x^3+3x^2y−4xy^2+y^3)

Therefore, the answer is x(2x^3+3x^2y−4xy^2+y^3) .

Step-by-step explanation:

x3 (2x-y)+xy(2x-y)^2

multiply x3 with 2x-y

2x^4 - x^3y  +

now multiply xy with 2x-y^2

4x^2y-xy^3

2x^4-x^3y + 4x^2y-xy^3

now take common if required.

can you tell what is the answer so i can solve more according to it

2

step-by-step explanation:

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