用简便方法计算这两道题

1.(70-2)*(70-2)+(40+4)*(80-1)=70*70+2*2-70*4+40*80+4*80-40-4=8100
2.(50-2)*(50+3)=50*50+50*(3-2)-6=2544

一题：原式=32*2*32*2+22*2*79
=(22+10)*2*32*2+22*2*79
=22*2*32*2+10*2*32*2+22*2*79
=22*2*32*2+10*2*(10+22)*2+22*2*79
=22*2*32*2+10*2*10*2+22*10*2*2+22*2*79
=(22*2)*(2*32+2*10+79)+400
=44*1632+400
=71808+400
=72208

二题：原式=2*4*6*53
=8*6*53
=8*318
=2544