Question

1/2[1-3/2y(y-3/8)]=y+5/6,用因式分解法解

Answer 1

1/2[1-3/2y(y-8/3)]=y+5/6

1－3/2 y﹙y－8/3﹚＝2y＋5/3

3/2 y﹙y－8/3﹚＋2y＋2/3＝0

3/2 y²－2y＋2/3＝0

9y²－12y＋4＝0

﹙3y－2﹚²＝0

y1＝y2＝2/3.