coreyhicksfass coreyhicksfass

12-05-2020
Mathematics

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(d^2+6d+9)+(d^3+6d+9)

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TheUnknownScientist TheUnknownScientist

12-05-2020

Answer:

= d^3 + d^2 + 12d + 18

Step-by-step explanation:

(d^2 + 6d + 9) + (d^3 + 6d + 9)

= d^2 + 6d + 9 + d^3 + 6d + 9

= d^3 + d^2 + 6d + 6d + 9 + 9

= d^3 + d^2 + 12d + 18

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