Question

5t square minus 10t plus 3.2 is equal to zero​

Answer 1

$5 {t}^{2} - 10t + 3.2 = 0 \\ 50 {t}^{2} - 100t + 32 = 0 \\ 25 {t}^{2} - 10t + 16 = 0 \\ 25 {t}^{2} - 10t - 40t = 0 \\ 5t(5t - 2) - 8(5t - 2) = 0 \\ (5t - 2) \: (5t - 8) = 0$

Than, if 5t-2=0

So, t=2/5

If 5t-8=0

So, t=8/5

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