Question

(12x+12y)^3=?
substitute the formula for (x+y)^3​

Answer 1

Answer:

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

x=12

y=12

12x^3+12y^3+3*12x*12y(12x+12y)

1728x^3+1728y^3+432xy(12x+12y)

1728x^3+1728y^3+5128x^2y+5128xy^2