Question

If p(x)=xsquare-4x+3 evaluate p(2)-p(-1)+p(1/2)

Answer 1

Answer:

13/4

Step-by-step explanation:

P(x)=x²

P(2)=2²

P(-1)=-1²

P(1/2)=1/2²

⇒2²-(-1)²+(1/2)²

 =4-1+1/4            ie.,2²=4,(-1)²=1,(1/2)²=1/4

 =3+1/4

 = 12-1   = 13/4

      4

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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.