Question

Find the coefficient of x in the expansion of (X+1) cube

Answer 1

Answer:

(x+1)^3

(a+b)^3=a^3+b^3+3ab(a+b)

hence

(x+1)^3=x^3+1+3x^2+3x

the coefficient of x is 3

Answer 2

Answer:

3

Step-by-step explanation:

(X+1)(X+1)(X+1)here coefficient ofX is 3