Question

find the coefficient of x2 in the following polynomials (x+4)(x+4)(x+4) answer ​

Answer 1

Answer:

12 is the answer

refer the attachment

Answer 2

Answer:

12

steps to be followed

(x+4)(x+4)(x+4)

(x+4)^3

applying (a+b)^3

x^3+4^3+3x^2×4+3x×16

x^3+64+12x^2+48x

therefore coefficient of x square is 12