Factorize \( x^2 − 2x − 15 \)
A
(x + 3)2
B
(x + 5)(x − 3)
C
(x − 5)2
D
(x − 5)(x + 3)
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
x2 − 2x − 15
(x2 − 5x) + (3x − 15)
x(x − 5)+ 3(x − 5)
(x − 5)(x + 3)
Source: Myschool Past Questions Archive (Record #40664)