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Math

Answered

What is the numerical coefficient of xy in the expansion of (4x + 5y)²?
40
-40
30
-30

Sagot :

Kimtaehyung5432go Kimtaehyung5432go

Answer:

40

Step-by-step explanation:

(4×+ 5y)²=16×²+40×y+25y²

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