Multiply using a special product formula.(9.7r + s)2

A. 94.09r2 + 38.8rs + 2s2 
B. 94.09r2 + 19.4rs + s2 
C. 94.09r2 + 9.7rs + s2 
D. 19.4r2 + 11.7rs + s2 


Answer: B

Mathematics

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