Find the coefficient of x^2 in the expansion of (x-y) ^3.

asked May 8, 2021 189k views

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3 votes

the answer is 3y hope it helped

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5 votes

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Answer:

-3y

Explanation:

The expansion is ...

(x -y)³ = x³ -3x²y +3xy² -y³

The coefficient of x² is -3y.

Tjrburgess answered May 13, 2021

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