Question

write the coefficient of x^2 in (2x^2-5) (4+3x^2)​

Answer 1

Answer:

using boad mass and solv

1 solv braket

Answer 2

Answer:

(2x²-5) (4+3x²)

=8x²+6x⁴-20-15x²

=-7x²+6x⁴-20

so coefficient of x²=-7