2. se considera expresia e(x)=(x+1)^2 + 2(x+1)(x-2) + (x-2)^2
Doresc doar punctul B
![2 Se Considera Expresia Exx12 2x1x2 X22Doresc Doar Punctul B class=](https://ro-static.z-dn.net/files/d0d/940006f475569dd166775cb24c9c85fc.jpg)
Răspuns:
Explicație pas cu pas:
E(x) = (2x - 1)^2
E(√2) = (2√2 - 1)^2 = 8 - 4√2 + 1 = 9 - 4√2
E(√2) + a√2 = 9 - 4√2 + a√2 numar natural
-4√2 + a√2 = 0
a√2 = 4√2
a = 4