Multiple Choice
Factor completely the polynomial. Indicate any that are not factorable using integers. a 2 - 4 a + 21
A) ( a - 3) ( a + 7)
B) ( a + 3) ( a - 7)
C) ( a - 3) ( a - 7)
D) ( a + 3) ( a + 7)
E) not factorable
Correct Answer:
Verified
Correct Answer:
Verified
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