Can I use excel to make an equation for 4 variables (x,y,z,w)(adsbygoogle = window.adsbygoogle || []).push({});

e.g

a,b,c,d,3,f,g,h,i, would be constants

w = ax + by + cz + dx^2 + ey^2 + fz^2 + gxy + hyz + iyz

What are these equations called ?

What literature can I study to better understand the procedure of making these tye of equations.

I tried regression but the equation looks like

w = ax + by + cz + c

Is it possible on ay other software e.g MATLAB

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# How to make 4 variable polynomial equatio

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