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Hollywood_chrissy
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(a^3+b^3)=(a+b)(a^2ab+b^2) my question is why the ab?
 one year ago
 one year ago
Hollywood_chrissy Group Title
(a^3+b^3)=(a+b)(a^2ab+b^2) my question is why the ab?
 one year ago
 one year ago

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JakeV8 Group TitleBest ResponseYou've already chosen the best response.1
Are you asking why the term "ab" is in the middle of the formula?
 one year ago

Hollywood_chrissy Group TitleBest ResponseYou've already chosen the best response.0
Yes
 one year ago

Hollywood_chrissy Group TitleBest ResponseYou've already chosen the best response.0
And not a positive ab
 one year ago

Venomblast Group TitleBest ResponseYou've already chosen the best response.0
it 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.
 one year ago

Venomblast Group TitleBest ResponseYou've already chosen the best response.0
it already factor in lowest term
 one year ago

JakeV8 Group TitleBest 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.
 one year ago

Hollywood_chrissy Group TitleBest ResponseYou've already chosen the best response.0
Yeah, i just noticed that too.
 one year ago
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