The Total solution for NCERT class 6-12
303 + 203 – 503Let a = 30, b – 20, c = -50∵ a + b + c = 30 + 20 -50 = 50 – 50 = 0∴ a3 +b3 + c3 = 3 abc⇒ 303 + 203 – 503 = 3 x 30 x 20 x(-50)= 90000