3x2+7x+4 এর উৎপাদক হবে---
A
(x+1)(3x+4)
B
(x+3)(x+1)
C
(x+2)(x-2)
D
(x+1)(3x-4)
Correct Answer: (x+1)(3x+4)
3x² + 7x + 4 = 3x² + 4x + 3x + 4 = x(3x + 4) + 1(3x + 4) = (x + 1)(3x + 4)