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Ex 2.5
Ex 2.5, 1 (ii)
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Ex 2.5, 1 (iv)
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Ex 2.5, 5 (ii) Important
Ex 2.5, 6 (i)
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Ex 2.5, 8 (i)
Ex 2.5, 8 (ii)
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Ex 2.5, 9 (i)
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Ex 2.5,13 You are here
Ex 2.5, 14 (i)
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Ex 2.5, 16 (ii) Important
Last updated at March 28, 2023 by Teachoo
Ex 2.5, 13 If x + y + z = 0, show that x3 + y3 + z3 = 3xyz . We know that x3 + y3 + z3 3xyz = (x + y + z) (x2 + y2 + z2 xy yz zx) Putting x + y + z = 0, x3 + y3 + z3 3xyz = (0) (x2 + y2 + z2 xy yz zx) x3 + y3 + z3 3xyz = 0 x3 + y3 + z3 = 3xyz Hence proved