Mathematics Teacher (1992) Vol. 85, No. 4
Two new equations from HP: 3 4 24 32+1 •n..c-.,...r.,.,1'tlto,Apnl 1990,C...,Iwlc Calco.lot.ora C0111-ond Rommondollono Nou 1bt'rt l l oo IJ&J\ \0 t.he nu.mbtr ofUNtA your a.choot m•y pure.h.Mt-0 1991 Hrwku.P•wd ComPM1 POI201 18 And HP has the only calculators that provide the proof! Do your mol-t ef fec ti ve teaching
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