If (x + 2) is a factor of x\(^2\) +px - 10, find the value of P.
A
3
B
-3
C
7
D
-7
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
x + 2 = 0
x -2
x\(^2\) = px - 10 = 0
(-2)\(^2\) - 2p - 10 = 0
4 - 2p - 10 = 0
\(\frac{-2p}{-2} = \frac{6}{-2}\) \(\to\) p = -3
Source: Myschool Past Questions Archive (Record #58417)