If the expression x3+ 3x2+ 4x + k has a factor x + 5, then what is the

1.	If the expression x3+ 3x2+ 4x + k has a factor x + 5, then what is the value of k?
A.	–70
B.	70
C.	48
D.	–48
Answer» C. 48

Discussion

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If x + y = 15, then (x – 10)3+ (y – 5)3is