用分解因式法解方程:2(t²-1)+t=1
问题描述:
用分解因式法解方程:2(t²-1)+t=1
答
2(t²-1)+t=1
2 (t+1) (t-1) + (t-1) =0
(t-1)(2t+3)=0
t-1=0或2t+3=0
t=1 或 t=-3/2