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Question

Show, by means of a counter example, that the inequality1+3x^(2)+x^(3)<(1+x)^3 is not true for all values of x

Hint: You might want to expand (1+x)^3.

Original post by Siddarth Karra

Show, by means of a counter example, that the inequality1+3x^(2)+x^(3)<(1+x)^3 is not true for all values of x

Try x = -1

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