Question

(6-2х)^2=3х-9 Помогите решить!!!

Answer 1

(6-2х)²=3х-9
36-24x+4x²-3x+9=0
4x²-27x+45=0
D=(-27)²-4*45*4=729-720=9=3²
$x_{1}= frac{-(-27)- sqrt{9} }{2*4} =frac{27-3 }{8} = frac{24}{8} =3 \ x_{2}= frac{-(-27)+ sqrt{9} }{2*4} =frac{27+3 }{8} = frac{30}{8} =3.75$