How do you factor $14x^3 - 21x$ ?

Question

3410 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-07-22T08:39:52

$7x(\sqrt2x+\sqrt3)(\sqrt2x-\sqrt3)$

$14x^3-21x$

$=7x(2x^2-3)$

$=7x((\sqrt2x)^2-(\sqrt3)^2)$

$=7x(\sqrt2x+\sqrt3)(\sqrt2x-\sqrt3)$

Answer 2 · 2018-07-22T08:41:10

$7x (2x^2 - 3)$

$14x^3$ & $21x :$ The GCF (Greatest Common Factor) is $7x$

Factor out the greatest common factor:
$14x^3 - 21x = 7x (2x^2 - 3)$

How do you factor 14x^3 - 21x14x^3 - 21x?