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Real Valued Functions

Question 2 ii...

Question

Question 2 (iii)

If p = -2, find the value of:
$- 2 p^{3} - 3 p^{2} + 4 p + 7$

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Solution

$- 2 p^{3} - 3 p^{2} + 4 p + 7 = - 2 (- 2)^{3} - 3 (- 2)^{2} + 4 (- 2) + 7$
[Putting p = -2]
$= - 2 \times (- 8) - 3 \times 4 - 8 + 7 = 16 - 12 - 8 + 7$
$= - 20 + 23 = 3$

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Question 2 (i)

Ifp = -2,find the value of:
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Real Valued Functions

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