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Hollywood_chrissy
 2 years ago
(a^3+b^3)=(a+b)(a^2ab+b^2) my question is why the ab?
Hollywood_chrissy
 2 years ago
(a^3+b^3)=(a+b)(a^2ab+b^2) my question is why the ab?

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JakeV8
 2 years ago
Best ResponseYou've already chosen the best response.1Are you asking why the term "ab" is in the middle of the formula?

Hollywood_chrissy
 2 years ago
Best ResponseYou've already chosen the best response.0And not a positive ab

Venomblast
 2 years ago
Best ResponseYou've already chosen the best response.0it cant be ab because the 1st term "a^2" does not have a "b". you can only take out if all the term got something in common.

Venomblast
 2 years ago
Best ResponseYou've already chosen the best response.0it already factor in lowest term

JakeV8
 2 years ago
Best ResponseYou've already chosen the best response.1@Hollywood_chrissy Maybe it would help you see it to multiply out the stuff on the right side of the equation. You end up with (a^2)(b) and (a)(b^2) terms, and by having "ab", the signs on those terms alternate and ultimately all cancel out, leaving only the cubed terms. It is similar to when you factor a difference of squares... a^2  b^2 = (a+b)(ab) << the signs in the factored version cause the unwanted terms like "ab" to cancel out, leaving only the squared terms.

Hollywood_chrissy
 2 years ago
Best ResponseYou've already chosen the best response.0Yeah, i just noticed that too.
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