Evaluate the Polynomial -2x^2 - x + 3 A. x = 2 B. x = -1

Question

Evaluate the Polynomial -2x^2 - x + 3

A. x=2

B. x=-1

 

I am have real problems with this one.

Answer 1

A.- -2*2^2 - 2 + 3 = -7

B.- -2*1^2 - 1 +3 = 0

Replace in the cases x by the given number and add them up.

B.- if x = -1, then the equation will have the value:

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