Type the correct answer in the box.

Expand the binomial (4x + 3y) 3.

The coefficient of the second term in the expansion of the binomial (4x + 3y) 3 is

The main formula is (a+b) ^3=a^3+3 (a^2) b+3a (b^2) + b^3

let be a=4x, b=3y

so (4x + 3y) ^3 = (4x) ^3+3. (4x) ^2. (3y) + 3.4x. (3y) ^2 + (3y) ^3

= 64x^3+144x^2. y+108x. y^2+27y^3

The coefficient of the second term in the expansion of the binomial (4x + 3y) 3 is 144