### Affine variety

~~Hi~~

Hi
Is there any ~~command ~~commands for writing affine variety (Let k be a field, and let f1,...,fs be polynomials in k[ x1,...,xn]. Then we set
V(f1,...,fs)= { (a1,...,an) ? ~~kn ~~k^n : fi (a1,...,an)=0 for all 1 ~~<i<s }="" we="" call="" v(f1,...,fs)="" the="" affine="" variety="" defined="" by="" f1,..,fs="" )="" ?<="" p="">
~~?i?s } we call V(f1,...,fs) the affine variety defined by f1,...,fs ) ?

~~also ~~Also how can I drew an affine variety plane such as ~~V(x^2-y^2*z^2+z^3) ~~V(x^2- y^2*z^2+ z^3) ?