If A = x2 + 4x + 9 and B = x3 + 6x – 2, what is 3A + B?
A. 4x2 + 18x + 25
B. x3 + x2 + 10x + 7
C. x3 + 3x2 + 18x + 25
D. 3x3 + 3x2 + 30x + 29
Answer:C
If A = x2 + 4x + 9 and B = x3 + 6x – 2, what is 3A + B?
A. 4x2 + 18x + 25 B. x3 + x2 + 10x + 7 C. x3 + 3x2 + 18x + 25 D. 3x3 + 3x2 + 30x + 29
Explanation: C