why is the answer not 8? (-1)^2-5(-1)+3

Why is the answer not 8? (-1)^2-5(-1)+3=9

 

$$\\(-1)^2-5(-1)+3\\\\
(-1)^2=-1*-1=+1$$

and

5(-1)=5*-1=-5

 

so we have

$$\\(-1)^2-5(-1)+3 \\\\
= (-1)^2-5*(-1)+3 \\\\
= +1-5*(-1)+3 \\\\
= +1--5+3 \\\\
= +1+5+3 \\\\
=9$$

 

Does that help?   If you want something explained more, make sure that you ask :)