dominiquempore8 dominiquempore8

30-04-2019
Mathematics

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17. (5a+ 6)2 =
A. 25a2+ 36
B. 25a2- 36
C. 25a2+ 30a + 36
D. 25a2 + 60a +36

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Respuesta :

sqdancefan sqdancefan

01-05-2019

Answer:

D. 25a² +60a +36

Step-by-step explanation:

You have memorized the form ...

(p +q)² = p² +2pq +q²

so you can write down immediately the result for p=5a and q=6:

(5a)² +2(5a)(6) +6² = 25a² +60a +36

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