Question

Find the coefficient of x² in (3x² – 5) (4 + 4x²)​

Answer 1

x is a coefficient . this is the right answer

Answer 2

Answer:

$\huge\color{blue}\boxed{\colorbox{lightgreen}{♧Solution♧}}\bigstar$

$(3x {}^{2} −5)(4+4x {}^{2} )= \\ 3x {}^{2} (4)−5(4)+3x {}^{2} (4x {}^{2} )−5(4x {}^{2} )= \\ 12x {}^{2} −20+12x {}^{4} −20x2 {}^{2} = \\ 12x {}^{4} −8x {}^{2}$

The coefficient of x2 in this is −8