Question

小学数学解方程的问题~~~3x^2-6x+2=0怎么求解?要详细步骤,谢谢...刚学到这,比较迷茫

Answer 1

3(x^2-2x)+2=0 3(x^2-2x+1-1)+2=0 3[(x-1)^2-1]+2=0 3(x-1)^2-3+2=0 3(x-1)^2=3-2=1 (x-1)^2=1/3 所以 x-1=根号(1/3),或者x-1=-根号(1/3), 即 x=1+根号(1/3),或者x=1-根号(1/3).