Question

If p(x) = x2 - 4x + 3, then evaluate p (2) - P(-1)+ P(1/2)
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Answer 1

2(2)-4(2)+3=4-8+3=7-8=-1
-1(2)-4(-1)+3=-2+4+3=-2+7=-5
(1/2)2-4(1/2)+3=2-2+3=0+3=3

Answer 2

Step-by-step explanation:

$\bf \underline{Solution-}$

We have p(x) = x² - 4x + 3

p(2) - p(-1) + p(1/2)

= (2² - 4 × 2 + 3) - {(-1)² - 4(-1) + 3} + {(½)² - 4 × ½ + 3}

= (4 - 8 + 3) - (1 + 4 + 3) + (¼ - 2 + 3)

= - 1 - 8 + ⁵/₄

= - 9 + ⁵/₄

= (-36 + 5)/4

= -31/4 Ans.