Add these three algebraic expressions using the vertical addition method. What is the answer?
a - 3a+2
2a? - 5a -3
- 4a + a-7
A. -a² + 7a-8
B. - a2 - 7a-8
C. a2 - 7a-8
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Answer:
c. a2 - 7a - 8
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