Question

2x во 2 степени = 5x + 3

Answer 1

2х²=5х+3
2х²-5х-3=0
D=25+24=49
√D=7
$x_1= frac{-b- sqrt{D}}{2a}= frac{5-7}{4}=- frac24=-0,5\ x_2=frac{-b+sqrt{D}}{2a}= frac{5+7}{4}= frac{12}{4}=3$