Question

Еxpand using suitable identities
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Answer 1

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Answer 2

Step-by-step explanation:

Identities

1). ( x + y + z )² = x² + y² + z² + 2xy + 2yz + 2zx

2). ( x - y )³ = x³ - y³ - 3xy × ( x - y )

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Correct Identities