👤

Daca E(x)=5-2x, calculati:
[tex]E( \sqrt{2}) * E(- \sqrt{2}) [/tex]


Răspuns :

E(√2)=5-2√2
E(-√2)=5+2√2
E(√2)*E(-√2)=(5-2√2)(5+2√2)=25-8=17