Question

2х2 – 5х + 2 = 0 дискриминант

Answer 1

$2x^{2} -5x+2=0\\\\D=(-5)^{2}-4*2*2=25-16=9\\\\x_{1}=\frac{5+3}{4} =2\\\\x_{2}=\frac{5-3}{4} =\frac{1}{2}$