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Mathematics 16 Online
OpenStudy (anonymous):

Are supposed to multiply the 7k with the 5m^2? 7k(4k+5m^2).

jimthompson5910 (jim_thompson5910):

yes and the 4k 7k*4k = 28k^2 7k*5m^2 = 35km^2 Now add up these products

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