ctets15p2 q60
0. In the product of (5x + 2) and (2x2 - 3x + 5), the sum of the coefficients of x2 and x is
- Option : D
- Explanation : (D) (5x + 2 ) × (2x2 - 3x + 5)
= 10x3 - 15x2 + 25x + 4x2 - 6x + 10
= 10x3 - 11x2 + 19x + 10
Coefficient of x2 = -11
Coefficient of x = 19
Sum of coefficients of x2 and x = 19 - 11 = 8
You must be logged in to post a comment.
You must be logged in to post a comment.