Question

what must be added to x²y-xy² to give x³-y³

Answer 1

'x' should be added to the above expression to get the required expression.

Step-by-step explanation:

since there's x² which is 2 x

and y and y² which gives us 3 y

the required expression needs 3 y and 3 x

so, another 'x' is required.

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