A= 5V3 (V3-7V18) = 5V3 (V3 -7V9x2) =5V3 (V3-7V3²x2) =5V3(V3-21V2) =5(V3)² -105V6 = 15 -105V6
B=(V10+ 3)² = (V10)² +2(3V10) +3² =10 +6V10 + 9 =6V10+19
C=(5-3V7)(5+3V7) = 25+15V7-15V7-9(V7)² =25 -63 = -38
D=(6-5V18)(4-3V2) = 24 -18V2-20V18+15V36 = 24 -18V2-20V9x2 +15V6² = 24 -18V2 -20V3²x2 +90 = -18V2-60V2+114 = -78V2+114
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A= 5V3 (V3-7V18) = 5V3 (V3 -7V9x2) =5V3 (V3-7V3²x2) =5V3(V3-21V2) =5(V3)² -105V6 = 15 -105V6
B=(V10+ 3)² = (V10)² +2(3V10) +3² =10 +6V10 + 9 =6V10+19
C=(5-3V7)(5+3V7) = 25+15V7-15V7-9(V7)² =25 -63 = -38
D=(6-5V18)(4-3V2) = 24 -18V2-20V18+15V36 = 24 -18V2-20V9x2 +15V6² = 24 -18V2 -20V3²x2 +90 = -18V2-60V2+114 = -78V2+114