Combine like terms. Write the answer in descending order.82.4x2 - 42.4x + 59.4 + 57.6x - 61.4x2 - 29.4
A. 21x2 + 15.2x + 30
B. 143.8x2 + 100x + 88.8
C. 21x2 + 100x + 88.8
D. 21x2 - 15.2x - 30
Answer: A
Mathematics
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A. 
B. 
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D. 
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Proof: STATEMENTS REASONS
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Decide if the statement is true or false.-
? -
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