Question

if p(x)= x (power is 2)-4x+3 evaluate p(2)-p(-1)+p(1/2)​

Answer 1

Answer:

Step-by-step explanation:

P(x) =x^2-4x+3

Then

P(2)=(2)^2-4(2)+3

P(2)=4-8+3

P(2)=-1

P(-1)=(-1)^2-4(-1)+3

P(-1) =1+4+3

P(-1)=8

Also

P(1/2)=(1/2)^2-4(1/2)+3

P(1/2)=1/4-2+3

P(1/2)=1/4+1

P(1/2)=5/4

Therefore

P(2)-p(-1)+p(1/2)=-1+8+5/4

=7+5/4

=33/4

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.