(7x + 8y)³ say with full metord
Answers
Answered by
1
Answer:
you get ans (a+b)hole que i hope clear your dout
Answered by
0
Answer:
343x³ + 1,176x²y + 1,344xy² + 512y³
Step-by-step explanation:
By using the formula :- (a + b)³ = (a³ + 3a²b + 3ab² + b³)
(7x + 8y)³
Here, a = 7x, b = 8y.
= (7x³ + 3 × 7x² × 8y + 3 × 7x × 8y² + 8y³)
= 343x³ + 3 × 49x² × 8y + 3 × 7x + 64y² + 512y³
= 343x³ + 1,176x²y + 1,344xy² + 512y³
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