Multiply.(0.7x + 0.5)2
A. 0.49x2 - 0.70x - 0.25
B. 0.49x2 + 0.70x + 0.25
C. 0.49x2 + 0.25
D. 0.49x2 - 0.70x + 0.25
Answer: B
Mathematics
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A. - 
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C. ?
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