Question

z²-z+0,25 descompuneti in factori polinomul

Answer 1

z²-z+0,25=z²-2x0,5xz+0,25=(z-o,5)²

Answer 2

Avem: $Z^{2}-Z+0,25= Z^{2}-2* \frac{1}{2}Z+( \frac{1}{2})^2=(Z- \frac{1}{2})^2$, deoarece 0,25=25/100=1/4=$( \frac{1}{2})^2$