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mzapata29
 2 years ago
Not understanding how to work sum of cubes 125x^3+27y^3
mzapata29
 2 years ago
Not understanding how to work sum of cubes 125x^3+27y^3

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matricked
 2 years ago
Best ResponseYou've already chosen the best response.0do u need to factor them

matricked
 2 years ago
Best ResponseYou've already chosen the best response.0then use a^3+b^3= (a+b)(a^2 ab+b^2)

matricked
 2 years ago
Best ResponseYou've already chosen the best response.0for a^3b^3= (ab)(a^2 +ab+b^2)

agent0smith
 2 years ago
Best ResponseYou've already chosen the best response.0\[ 125x^3+27y^3 = (5x)^3 + (3y)^3\]

matricked
 2 years ago
Best ResponseYou've already chosen the best response.0if u need not factor them then use a^3+b^3 =(a+b)^3 3ab(a+b)

agent0smith
 2 years ago
Best ResponseYou've already chosen the best response.0Now a = 5x and b =3y.

matricked
 2 years ago
Best ResponseYou've already chosen the best response.0125x^3+27y^3 =(5x)^3 +(3y)^3 =(5x+3y)(25x^2 15xy +9y^2)
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