Factorize the following expression 2x2 x - 15 - WAEC Mathematics 1989 Question
Factorize the following expression; 2x2 + x - 15
A
(2x+5)(x-3)
B
(2x-5)(x+3)
C
(2x-5)(x-3)
D
(2x-3)(x+5)
correct option: b
2x 2 + x - 15; 2x 2 + 6x - 5x - 15
(2x 2 + 6x) - ( 5x + 15)
2x(x + 3) - 5(x + 3)
(2x - 5)(x + 3)
(2x 2 + 6x) - ( 5x + 15)
2x(x + 3) - 5(x + 3)
(2x - 5)(x + 3)
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