MHB Given a quadratic in x, find the cube of x

[ter27]

if $x^2 = x+3$ then $x^3 = ??$ Not sure about this would appreciate some help

 

[Dethrone]

Assuming that your question is the following:

If $x^2=x+3$, then find $x^3$

Here, we need to find what $x$ is, and to do so, we can apply the quadratic formula on $x^2-x-3=0$

 

[ter27]

Assuming that your question is the following:

If $x^2=x+3$, then find $x^3$

Here, we need to find what $x$ is, and to do so, we can apply the quadratic formula on $x^2-x-3=0$

Thanks a lot have got it