How do you solve #3x^7 - 243x^3=0#?
2 Answers
Dec 12, 2015
Explanation:
First thing you want to do is factor. You can factor out
Now set both factors to zero
Dec 12, 2015
Explanation:
Factor out a common
Recognize a difference of squares.
Recognize another difference of squares.
Set each part equal to
Thus,
Look at a graph:
graph{3x^7-243x^3 [-12.73, 12.58, -6.17, 6.48]}
The