Answers

2016-07-16T12:13:33+08:00
9t^2-4=0

Factor and it will be
(3t+2)(3t-2)=0

3t+2=0 & 3t-2=0

The answer will be
t= 3/2 and t= -3/2

(Double root)
1 5 1
2016-07-16T13:29:34+08:00
To solve,
 
               9t^2-4
               9t^2=4
                \frac{9t^2}{9}= \frac{4}{9}
               t^2= \frac{4}{9}
               t= \frac{2}{3}, t= -\frac{2}{3}
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