Odpowiedź:
a. (x+3)/x=(-3+3)/-3=0/-3=0
b. -5x2-x=-5(-3)^2-(-3)=-5•9+3=-45+3=-42
c. -2x+5=-2(-3)+5=6+5=11
d. (x+1)/(x-1)=(-3+1)/(-3-1)=-2/-4=1/2
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Odpowiedź:
a. (x+3)/x=(-3+3)/-3=0/-3=0
b. -5x2-x=-5(-3)^2-(-3)=-5•9+3=-45+3=-42
c. -2x+5=-2(-3)+5=6+5=11
d. (x+1)/(x-1)=(-3+1)/(-3-1)=-2/-4=1/2