Science

Math

Humanities

... and beyond

Socratic Meta
Featured Answers

Topics

How do you solve #a^3 = 4a #?

1 Answer

Shwetank Mauria

Sep 27, 2016

#a=0# or #a=-2# or #a=2#

Explanation:

#a^3=4a#

#hArra^3-4a=0# or

#a(a^2-4)=0# or

#a(a^2-2^2)=0# or

#a(a+2)(a-2)=0#

Hence either #a=0# or #a+2=0# or #a-2=0# i.e.

#a=0# or #a=-2# or #a=2#

Related questions

See all questions in Comparing Methods for Solving Quadratics

Impact of this question

1338 views around the world

You can reuse this answer
Creative Commons License