Question

E(x)= x(la a 4-a) -2x (patrat)y(patrat) +y (la a 4-a) totul pe x(la a 4-a) - y(la a 4-a)
Aduceti E(x) la forma cea mai simpla!!
Multumesc!! Dau vote+multumesc+10 puncte!!

Answer 1

E(x)=x⁴-2x²y²+y⁴/x⁴-y⁴ = (x²-y²)²/(x²-y²)(x²+y²)
se simplifica factorii
=x²-y²/x²+y²

Answer 2

 $E(x)=...=\frac{(x^2-y^2)^{\not2}}{(x^2\not-y^2)(x^2+y^2)}=\frac{x^2-y^2}{x^2+y^2}}=\frac{(x-y)(x+y)}{x^2+y^2}$