Question

Expand (x + 5)^3.
a. by multiplying (x+5)(x+5)(x+5).
b. by finding the volume of an appropriate cube and by finding the volume of the eight boxes that make up the cube.

Answer 1

x+5
x+5
______
x^2+5x
5x+25
____________
x^2+10x+25
x+5
______________
x^3+10x^2+25x
5x^2+50x+125
_______________________
x^3+15x^2+75x+125

Answer 2

how did you get that?

Answer 3

multiply the given by itself 3 times,and you will get the answer

Answer 4

Thanks

Answer 5

Ah finally got it!! THanks!

Answer 6

Do you know what B would be?