Question

How do you solve `3x^3 + 2x = x^4 + 2x`?

Answer 1

`x=0" or " x=3`

Explanation:

`"rearrange equation and equate to zero"`

`rArrx^4-3x^3=0`

`rArrx^3(x-3)=0`

`"equate each factor to zero and solve"`

`x^3=0rArrx=0" with multiplicity 3"`

`x-3=0rArrx=3" with multiplicity 1"`