2x2+x-15-এর উৎপাদক কোনটি?
A
(x + 3) (2x-5)
B
(x-3) (2x-5)
C
(x -3)(2x-5)
D
(x+3)(2x+5)
Correct Answer: (x + 3) (2x-5)
2x2 + x - 15 = 2x2 + 6x - 5x - 15 = 2x(x + 3) - 5(x + 3) = (x + 3)(2x - 5)