Question

Aflati valoarea raportului algebric $\frac{5-4xy}{x^{2}+1}$ pentru:
x=-1,y=1

Answer 1

Pt.x=-1, y=1, atunci (5-4xy)/(x^2+1)=(5-4*(-1)*1)/((-1)^2+1)=(5+4)/(1+1)=9/2.

Answer 2

x=-1
y=1
(5-4xy)/(x²+1) =(5+4)/(1+1)=9/2