Question

Решите уравнение 3x^+5x=2

Answer 1

$3x^2 + 5x = 2 \\ 3x^2 + 5x - 2=0 \\ D = 5^2 - 4*3*(-2)=25+24=49 \\ x_{1}= \frac{-5+7}{2*3}= \frac{2}{6}= \frac{1}{3} \\ x_{2} = \frac{-5-7}{2*3}= \frac{-12}{6}=-2$
Ответ: $x_{1}= \frac{1}{3}, x_{2} = -2$