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Use pascal triangle to expand and simplify (5x+4y)³​

Sagot :

ChezCake14

Answer:

125x³+240xy²+64y³ +300yx²

Step-by-step explanation:

Row of pascals triangle to use is 1 3 3 1

For binomial expansion, use a³ +3a²b+3ab²+b³

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