Math, asked by nileshmajrekar, 7 months ago

Expand(7x + 8y)3 plz help

Answers

Answered by Anonymous

8

Solution :-

→ (7x + 8y)³

Apply identity
(a + b)³ = a³ + b³ + 3ab(a + b)

→ (7x)³ + (8y)³ + 3 × 7x × 8y(7x + 8y)

→ 343x³ + 512y³ + 168xy(7x + 8y)

→ 343x³ + 512y³ + 1176x²y + 1344xy²

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