Combine like terms. 6a2 + 4a + 5 + 3a2 + 7a – 2?

2008-02-20 2:38 pm

A) 20a2 + 3
B) 20a3 + 3
C) 18a2 + 28a – 10
D) 9a2 + 11a + 3

回答 (5)

2008-02-20 4:51 pm

✔ 最佳答案

9a² + 11a + 3
OPTION D)

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2008-02-20 10:42 pm

6a^2 + 4a + 5 + 3a^2 + 7a - 2

combine like terms:

(6a^2 + 3a^2) + (4a + 7a) + (5 - 2) =

9a^2 + 11a + 3

ANS: D

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2008-02-20 10:40 pm

D, add or subtract the common terms

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2008-02-20 10:51 pm

6a^2 + 4a + 5 + 3a^2 + 7a – 2
= 9a^2 + 11a + 3
= D

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2008-02-20 10:43 pm

6a^2 + 4a + 5 + 3a^2 + 7a - 2
= 6a^2 + 3a^2 + 4a + 7a - 2 + 5
= 9a^2 + 11a + 3
(answer D)

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