Question

If p(x) =x2-4x+3 then find p (2)-p(-1)+p(1/2)

Answer 1

Answer:

P(x)=x²-4x+3

so,

p(2)= 2²-4×2+3= 4-8+3= (-1)

p(-1)= (-1)²-4(-1)+3= 1+4+3= 8

p(1/2)= (1/2)²-4(1/2)+3= (1/4)-2+3 =1/4+1 =5/4

now,

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

= -1+8-5/4

=7-5/4

=28-5/4

=23/4

Answer is 23/4 or 5.75.

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Step-by-step explanation:

Answer 2

Answer: −31/4 is the solution

p (2)-p(-1)+p(1/2)=-31/4

Step-by-step explanation:

After putting x=2 in equation, we get −1.

p(2) =2^2-(4*2)+3

p(2) =4-8+3

p(2) =-4+3

p(2) =-1

After putting x=−1, we get 8

p(2) =(-1)^2-(4*-1)+3

p(2) =1-(-4)+3

p(2) =5+3

p(2) =8

After putting x=1/2, we get 5/4

p(2) =(1/2)^2-(4*(1/2))+3

p(2) =5/4

p (2)-p(-1)+p(1/2)=−1−8+ 5/4

=−9+5/4

= (−36+5)/4

= −31/4

Thus we get the result −31/4 is the solution