# How do you solve #3r^5 + 15r^3 -18r = 0#?

##### 1 Answer

May 17, 2015

All the factors are divisible by

Note that this means

Next notice that

So

So the five roots are

May 17, 2015

All the factors are divisible by

Note that this means

Next notice that

So

So the five roots are

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