Find Coefficients of x² and x is:

In the Product of (5x+2) and (2x2 -3x+5), the Sum of the Coefficients of x² and x is:

  1. 9
  2. -8
  3. -9
  4. 8
Monis Rasool Professor Asked on 20th September 2015 in Maths.
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1 Answer(s)

Answer: (4) 8

Explanation:-
(5x + 2) and (2x2 – 3x + 5)
Product = (5x + 2) (2x2 – 3x + 5)
= 10x3 – 15x2 + 25x + 4x2 – 6x + 10
= 10x3 – 11x2 + 19x + 10
Then, the sum of the coefficients of x2 and x = – 11 + 19
= 8.

Hence, the answer is (4) 8.

 

Anurag Mishra Professor Answered on 20th September 2015.
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