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Without actually calculating the cubes and using suitable identities evaluate the expression 35³-20³-15³ step wise step solution best answer I will mark as brainlist |
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Answer» Taking 35 = a , -20 = B , -15 = c a + b + c = 35 - 20 - 15 = 0If a+b+c = 0, Then a^3 + b^3 + c^3 = 3abc ------ Identity35^3 + (-20)^3 + (-15)^3 = 3 x 35 x -20 x -15 = 31,500Shortest and the easiest METHOD to do this question...PLEASE mark as Brainliest |
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