Question

(13) (i). If p(x) = 2 + 5x then p(2) + p(-2) - p(1).
(ii) If p(x) = 2x2 - 513x + 5 then p(513).​

Answer 1

Answer:

p(2) + p(-2) - p(1) = -3

p(513) = 263174

Step-by-step explanation:

Given that-

(i) p(x) = 2 + 5x

So, p(2) = 2 + 5(2)

             = 2 + 10

p(2) = 12

p(-2) = 2 + 5(-2)

       = 2 - 10

p(-2) = -8

p(1) = 2 + 5(1)

      = 2 + 5

p(1) = 7

Now, p(2) + p(-2) - p(1)

= 12 + (-8) - 7

= 12 - 8 - 7

= 12 - 15

= -3

So, p(2) + p(-2) - p(1) = -3

(ii) $p(x) = 2x^{2} - 513x + 5$

$p(513) = 2(513)^{2} - 513(513) +5$

$= 2 \times263169 - 263169 + 5$

$=526338 - 263169 + 5$

$= 263169 + 5$

p(513) = 263174

Answer 2

Answer:

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