Question

2x-x(квадрат)+6=0
помогите

Answer 1

2-x^2+6=0
- x^2 +2x+6 =0
D=b^2 - 4ac=2^2-4*(-1)*6=4+24=4+24=28
√D=√28
x1= 1 - √7 
x2= 1+√7