Subtract.(0.7x4 - 0.3x2 + 0.8) - (2.5x4 + 2.7x - 4.9)
A. -1.8x4 - 0.3x2 - 2.7x + 5.7
B. -1.8x4 - 0.8x2 - 4.1
C. -1.8x4 - 0.3x2 - 2.7x - 4.1
D. -1.8x4 - 0.3x2 + 2.7x + 5.7
Answer: A
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A. 
B. 
C. 
D. 
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