Question

find the coefficient of x2 in (3x2 -5 ) ( 4+ 4x2​

Answer 1

hey your answer is :-

=> (3x2 -5 ) ( 4+ 4x2 )

=> 12x2 + 12x4 - 20 - 20x2

=> -8x2 + 12x4 - 20

From the solution we get,

coefficient of x2 = -8