✔ 最佳答案
5t²-10t = 0. So, 5t² = 10t.....
5t = 10. So, t = 10÷5 = 2.
So, t = 2 is the answer.
OR
5t²-10t = 0 can be written as:
5t(t - 2) = 0. So, either the value of 5t must be equal to 0 or the value of t - 2 should be zero. Take it as two cases.
If t - 2 = 0, then t = 2.
Similarly, if 5t = 0, then t = 0. So, t has two solutions or values 2,0.