Question
Find the excluded values, of the following expression
$\frac{t}{t^2-5 t+6}$
$\frac{t}{t^2-5 t+6}$
✓
Answer
The expression $\frac{t}{t^2-5 t+6}$ is undefined
when $t^2-5 t+6=0$
$(t-3)(t-2)=0$
$t -3=0$ or $t -2=0$
$t=3$ or $t=2$
The excluded values are 2 and 3
when $t^2-5 t+6=0$
$(t-3)(t-2)=0$
$t -3=0$ or $t -2=0$
$t=3$ or $t=2$
The excluded values are 2 and 3
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