3. There are (12a-13x) members in a club. Each member contributes (3x +7a). What is the
total collection?
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Answer:
-39 x^2 + 84 a^2 - 55ax
Step-by-step explanation:
number of members in a club = (12a - 13x)
Each member contributes = (3x +7a)
the total collection = (12 a - 13x)(3x+7a)
= -39x^2 +84 a ^2 - 91 ax + 36 ax
= -39 x^2 + 84 a^2 - 55ax
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