457-336t+64t²=25

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 19:24:15
457-336t+64t²=25
x)315566+63)QS6452I*!_`gO\"obldk1&ndXmd}DN äDȂʔ?Vbk 1d92c3

457-336t+64t²=25
457-336t+64t²=25

457-336t+64t²=25
64t²-336t+432=0
4t²-21t+27=0
(t-3)(4t-9)=0
t=3或t=2.25