Divide a^3 + c^3 by… - QuestionCove
OpenStudy (anonymous):

Divide a^3 + c^3 by a + c.

5 years ago
OpenStudy (anonymous):

See use the formula: $a^3 + c^3 = (a+c)(a^2 + c^2 - ac)$ Put this in above expression and tell what you will get??

5 years ago
OpenStudy (anonymous):

So... One?

5 years ago
OpenStudy (anonymous):

$\frac{(a + c) \times (a^2 + c^2 - ac)}{a +c} = ?$

5 years ago
OpenStudy (anonymous):

Okay. a^3 / a + c

5 years ago
OpenStudy (anonymous):

How??

5 years ago
OpenStudy (anonymous):

Well, wouldn't it be a x a^2 + a x c^2 + a x -ac and then you simplify and are left with just a^3 and the a + c it was over?

5 years ago
OpenStudy (anonymous):

See (a+c) and (a + c) gets cancel then what are you left with??

5 years ago
OpenStudy (anonymous):

a^2 + c^2 - ac ...Derp.

5 years ago