<prompt> Zinazopewa w na z ni nambari changamano kama vile wz1 na w2z214, hupata thamani ndogo kabisa ya w3z 3.  <response>: Tunajaribu kueleza w3z3 kulingana na wz na w2z2. Tuna, kwa jumla ya cubes, w3z3 wzw2z2-wz,kwa hivyo tunataka sasa kueleza wz kulingana na wz na w2z2. Ili kufanya hivyo , tunaandika wz2 w2z22wz, ambayo inafuata kwamba wz tfrac12 leftwz2 - w2z 2kulia. Hivyo, anzailiyopangwa w3z3wzw2z2-tfrac12leftwz 2-w2z2kulia wzkushototfrac32w2z2-tfrac12wz2kulia mwishozilizopangiliwaTukichukua ukubwa wa pande zote mbili, tumeweka imeanzailiyopangwakushotow3z3kulia kushoto wzkushototfrac32w2z2-tfrac12wz2kulia kulia wz cdot kushototfrac32w2z2-tfrac12wz2kulia. endalignedTumepewa hiyo wz 1, hivyo w3z3 kushototfrac32w2z2-tfrac12wz2kulia.Tuna lefttfrac32w2z2kulia tfrac32 cdot 14 21 na lefttfrac12wz2kulia tfrac12 cdot 12 tfrac12, hivyo kwa usawa wa pembetatu, w3z3 ge kushoto 21 - tfrac12 kulia tfrac412. 