Question

what are the roots of the function y=x^3+4x^2+3x=0

Answer 1

First test some x values so see which one will give y = 0. After some testing we can see y = 0 when x = -1
When x = -1, y = 0
So therefore, (x+1) is a factor of the function
Next we factorise the function through synthetic division
x^3+4x^2+3x=(x+1)(x^2+3x)
I'm sure you can find the roots now

Answer 2

i'm confused :(

Answer 3

just look at the graph you posted, the roots are the x -intercepts for the curve.

x = 0, -1 and you can work out the last 1

Answer 4

-3 ???
@campbell_st

Answer 5

that's correct