Question on: JAMB Mathematics - 2015
Factorize \( x^2 − 2x − 15 \)
A
(x + 3)2
B
(x + 5)(x − 3)
C
(x − 5)2
D
(x − 5)(x + 3)
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Correct Option: D
x2 − 2x − 15
(x2 − 5x) + (3x − 15)
x(x − 5)+ 3(x − 5)
(x − 5)(x + 3)
(x2 − 5x) + (3x − 15)
x(x − 5)+ 3(x − 5)
(x − 5)(x + 3)
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