9514 1404 393
Answer:
Left-to-right:
Step-by-step explanation:
In this pattern, the exponents of 'a' and 'b' total n. The 'b' exponent value is the right-subscript of C. The exponents range from 0 to n. Generally, the 'a' exponents count down from n; the 'b' exponents count up from 0.
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Additional comment
You will see this pattern again. You might want to keep it handy.
