用分解因式法解方程: 2(t눀-1)+t=1

2024-12-29 10:35:27
推荐回答(4个)
回答1:

2(t²-1)+t=1
解: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

回答2:

2(t²-1)+t=1
2t²-2+t=1
2t²-2+t-1 =0
2t²+t-3 =0
(2t+3)(t-1)=0
t=-3/2或t=1

回答3:

2(t²-1)+t=2(t-1)(t+1)+t=1 2(t-1)(t+1)=1-t -2(t+1)=1
t=-3/2 或 t=1

回答4:

解;2t²+t-3 =0
(2t+3)(t-1)=0
t=-2/3或t=1 。