8 विस्तार सूत्रे (a+b)³=a³+3a²b+3ab²+b³ (a-b)³=a³-3a²b+3ab²-b³ 1)विस्तार करा.101³ उकल (101)³ =(100+1)³ =100³+3×100²×1+3×100×1²+1³ =1000000+3×10000×1+300×1+1 =1000000+30000+300+1 =1030301 2)विस्तार करा 198³ उकल 198³ =(200-2)³ =200³-3×200²×2+3×200×2²-2³ =8000000-3×40000×2+600×4-8 =8000000-3×80000+2400-8 =8000000-240000+2400-8 =8002400-240008 =77,62,392