Question

What are the differences between (x+y)^3 and x^3+y^3?

Answer 1

(x+y)^3 you are multiplying (x+y) by itself 3 times and x^3+y^3 is multiplying each individual variable 3 times

Answer 2

because first one is (x+y)(X+Y)(X+Y) and second is x^3+y^3

Answer 3

Thank you for all your help it is greatly appreciated.

Answer 4

(x+y)^3= x^3+y^3?+3xy(x+Y)
here in the expression (x+y)^3 already x^3+y^3 is exist and extra 3xy(x+y) is added also........
second method..........
let x=2 and y=3 then (x+y)^3=(2+3)^3=5^3=125
and in x^3+y^3=2^3+3^3=8+27=35
here 125 is not equal to 35 so they are different

Answer 5

thanks