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Mathematics 10 Online
OpenStudy (anonymous):

Find the sum. (4n2 + 2n + 8) + (5n2 + n + 13) A. 9n4 + 3n2 + 21 B. 9n2 + 3n + 21 C. 9n2 + 2n + 21

OpenStudy (anonymous):

B.

OpenStudy (anonymous):

You start by grouping all the common terms together: 4n2 + 2n + 8 + 5n2 + n + 13 (4n2 + 5n2) + (2n + n) + (8+13) Hence, on solving, we obtain : 9n2 + 3n + 21

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