Question

:) Solve the following questions (Any two): (i) Find the value of the polynomial 2x3 + 2x, when x = -1.​

Answer 1

$2 \times 3 + 2x \\ > 2 \times 3 + 2 \times ( - 1) \\ > 2(3 + ( - 1)) \\ > 2(3 - 1) \\ > 2 \times 2 \\ > 4$

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$2 \times 3 + 2x \\ > 2 \times 3 + 2 \times ( - 1) \\ > 2(3 + ( - 1)) \\ > 2(3 - 1) \\ > 2 \times 2 \\ > 4$