2 2+3 = 2 5,\rz{x BCQ5<=.30+2X5=75 ?@ 0,\r64.\r`p?\r??10\rz{efA B C D 5<=.40+75=115 ?@ 0\refABC5<=115?@ 0.\r2 . 224+6=4 ?@ 0)s.2 X 2 = 4 , z{2 0#\r54+6=9 ?@ 0)s.3 X 3 = 9 , z{3 0#\r294+6=49 ?@ 0)s.7 X 7 = 4 9 , z{7 0#\r:p@KK=2X2X2+3X3X3+7X7X7,\r= 8+27+343,\r=378 I@ 0\rAn:p@K5K=378I@ 0.\r3 . 2Xn?147+ 4 - 1 =49, 49X4=196#\rXn?168+ 8 - 1 = 2 4 #\r
An?196-24=172#\r
An?172.\r4 . 2 40X6+600 4-6\r= 8404-6\r= 140 0/\rG51400/.\r5 . 2685 - 55X7\r=685 - 385\r=300 0\r3000.\r6 . 2E50X25=1250 #\rG60X 25 - 5 =1200 #\r60X25=1500 , 1500+200=7.5 n)1500- 30X7=1290 #\r1200Q1250V 4 2 9 0 )z{Go#\rG)o.\r65