Question

РЕШИТЕ ПЛИЗ

х²+5х-14=0
х²-14х+40=0
3у²-13у+4=0
х²+6х-2=0
3х²-4х-5=0

Answer 1

5)
$\frac{ - ( - 4) + - \sqrt{ - ( - 4 {)}^{2} - 4 \times 3 \times ( - 5) } }{2 \times 3}$
$\frac{4 + - \sqrt{16 + 60} }{6}$
$\frac{4 + - 2 \sqrt{19} }{6}$
$x1 = \frac{2 + \sqrt{19} }{3}$
$x2 = \frac{2 - \sqrt{19} }{3}$