4t+8-(3/2)t^2=0 解方程
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4t+8-(3/2)t^2=0 解方程
4t+8-(3/2)t^2=0 解方程
4t+8-(3/2)t^2=0 解方程
3t^2-8t-16=0
(3t+4)(t-4)=0
t=-4/3 or 4
3t^2-8t-16=0
1 -4
t
3 4
(t-4)(3t+4)=0
t1=4, t2=-4/3
4t+8-(3/2)t^2=0
8t+16-3t^2=0
3t^2-8t-16=0
(3t+4)(t-4)=0
t=-4/3或t=4