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18-12-2020
Mathematics

contestada

Expand the function f(x)=(x+7)³

Respuesta :

18-12-2020

Answer:

Step-by-step explanation:

you can use the (a+b)² = a²+b²+2ab

(x+7)(x+7)²= (x+7)(x²+49+14x) = x³+49x+14x²+7x²+343+98x = x³+21x²+147x+343

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