Question

решите уравнение 5х^-2х-3=0

Answer 1

Д=4-4*5*(-3)=64
х1=2-8/10=3/5
х2=2+8/10=1

Answer 2

$5 {x}^{2} - 2x - 3 = 0 \\ d = \sqrt{ {b}^{2} - 4ac } = \sqrt{4 - 4 \times 5 \times ( - 3)} = \sqrt{64} = 8 \\ x1 = \frac{ 2 - 8}{10} = - 0.6 \\ x2 = \frac{2 + 8}{10} = 1$