Question

(1)x^2-3x+1=0 (2)2x^2+6=7x (3)3x^2-9x+2=0 (4)2x^2+3x-2=0

Answer 1

(1)x^2-3x+1=0

x=（3+√5）/2 x==（3-√5）/2

(2)2x^2+6=7x

x=2 x=3/2

(3)3x^2-9x+2=0

x=（9+√57）/6 x=（9-√57）/6

(4)2x^2+3x-2=0

x=-2 x=1/2