Question

Factor: 125x^3+27y^3

Answer 1

125x^3 = (5x)^3
27x^3 = (3x)^3

\(a^3+b^3 = (a+b)(a^2 - ab+b^2)\)
Can you use this identity to do it?

Answer 2

Just note that 125x^3 = (5x)^3

Answer 3

and 27y^3 = (3y)^3

Answer 4

I never used this formula in that sense before... with that I got 5^3x^3 + 3^3y^3, how would I plug that in with a and b?

Answer 5

no,not like that

Answer 6

(5x + 3y)(___ - __*__ + ____)

Answer 7

Hey Ray - do you see the light, or to explain more ?

Answer 8

Yeah, just give me a second to work it out and see if I come up with the right answer.

Answer 9

All right Ray

Answer 10

Okay, I got it, (5x+3y)(25x^2-15xy+9y^2)

Answer 11

Thank you.

Answer 12

OO kay , by the way what is your actual name (reply in message )

Answer 13

I mean just the given name - not family