Question

Квадратные уравнение Теорема виета
3x^2+7x+2=0

Answer 1

$3 {x}^{2} + 7x + 2 = 0 \ d = {b}^{2} - 4ac = {7}^{2} - 4 times 3 times 2 =49 -24 = 25 = {5}^{2} \ x1 = frac{ - b + - sqrt{d} }{2 times a} = frac{ - 7 + 5}{2 times 3} = frac{ - 2}{6} = - frac {1}{3} \ x2 = frac{ - 7 - 5}{2 times 3} = frac{ - 12}{6} = - 2$