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Expand the function f(x)=(x+7)³
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Expand the function f(x)=(x+7)³

User Lindemann
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1 Answer

4 votes

Answer:

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

User Dorita
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