Find the factors A and B of \[{{x}^{2}}+10x+21\]in the form AB.

1.	Find the factors A and B of \[{{x}^{2}}+10x+21\]in the form AB.
A.	(x - 3) (x - 7)
B.	(x + 3) (x + 7)
C.	(x - 3) (x + 7)
D.	(x + 3) (x,-7)
Answer» C. (x - 3) (x + 7)

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Find the factors A and B of \[{{x}^{2}}+10x+21\]in the form AB.

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