Răspuns:
1) = (√2x-1)² = 0
√2x-1 = 0
√2x = 1
x = 1/√2
x = √2/2 → cine
2) = 2x²-2x-1 = 0
x(2x+1)-(2x+1) = 0
(2x+1)(x-1) = 0
2x+1 = 0
x-1 = 0
x1 = -1/2
x2 = 1 → seamana
3) = x²+2x-5x-10 = 0
x(x+2)-5(x+2) = 0
(x+2)(x-5) = 0
x+2 = 0
x-5 = 0
x1 = -2
x2 = 5 → vânt
4) = 16x²+6x-1 = 0
16x²+8x-2x-1 = 0
8x•(2x+1)-(2x+1) = 0
(2x+1)(8x-1) = 0
2x+1 = 0
8x-1 = 0
x1 = -1/2
x2 = 1/8 → culege
5) = x = 0
x+√15 = 0
x1 = -√15
x2 = 0 → furtuna
Rezultatul obtinut:
Cine seamana vant culege furtuna.
EVERGREEN
