Perform the operations indicated.(2x2 + 7x - 4) - (-5x2 + 9x + 4) + (-2x2 - 3x - 5)
A. -5x2 - 5x + 13
B. -5x2 + 5x - 13
C. 5x2 + 13x + 5
D. 5x2 - 5x - 13
Answer: D
Mathematics
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?
?BAC if m ?1 is 30º
?
?
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Mathematics