Given a quadratic in x, find the cube of x

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To find the cube of x given the equation \(x^2 = x + 3\), first solve the quadratic equation \(x^2 - x - 3 = 0\) using the quadratic formula. The roots of this equation yield the values of x, which can then be used to calculate \(x^3\). The discussion confirms that applying the quadratic formula effectively leads to the solution for \(x^3\).

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ter27
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if $x^2 = x+3$ then $x^3 = ??$ Not sure about this would appreciate some help
 
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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 $x^2-x-3=0$
 
Rido12 said:
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
 

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