Write the expanded form of (8a + 3b + 9c)2.
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A.
64a2 + 9b2 + 81c2 + 48ab + 54bc + 144ac
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B.
64a2 + 9b2 + 81c2 + 52ab + 54bc + 144ac
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C.
64a2 + 9b2 + 81c2 + 48ab + 54bc + 154ac
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D.
64a2 + 9b2 + 81c2 + 48ab + 49bc + 144ac
Correct Answer:
A. 64a2 + 9b2 + 81c2 + 48ab + 54bc + 144ac
Explanation:
The pattern involves subtracting 4 from the position of each letter in the English alphabet. - S (19) - 4 = O (15)
- K (11) - 4 = G (7)
- I (9) - 4 = E (5), but the example uses N (14). Re-evaluating the logic:
The actual pattern is:
- S (19) - 4 = O (15)
- K (11) - 4 = G (7)
- I (9) + 5 = N (14)
- B (2) + 5 = G (7)Applying this to QIRK: - Q (17) - 4 = M
- I (9) - 4 = E
- R (18) + 5 = W
- K (11) + 5 = PTherefore, QIRK is related to MEWP.
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