Question

Напишите ответ 2x^2+3x-27=0

Answer 1

$2x^2+3x-27=0\\D=9+216=225\\x_1=(-3+15):4=3\\x_2=(-3-15):4=-4,5$

Answer 2

$2^{2} +3x-27=0$
D=9+216=225
$\sqrt{225} =15$
x1=$\frac{-3-15}{4} = \frac{-18}{4} =-4 \frac{1}{2}$
x2=$\frac{-3+15}{4} = \frac{12}{4} =3$