How could i solve this?

Question

the equation $f(x)=x^2$ can be written as $x^3+px^2+q=0$
show that p=-1 and q=-20

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Answer 1 · 2018-07-03T14:34:26

Are you sure you have included all details here? Normally if $f(x)=x^2$ , $f(x)!=x^3+px^2+q$ , so there is something I don't understand here.