Question

if p(x) = x² - 4x + 3 , evaluate : p(2) - p (-1) + p(½).

Answer 1

The answer is : 1-8+5/4=-23/4


Thank you

Answer 2

p(2)=x^2-4x+3
=2^2-4×2+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
=-19/4
p(2)-p(-1)+p1/2)
-1-8+19/4
-24/4
6