Answer
$t=1$
Work Step by Step
We solve by factoring:
$t^{1/2}-2t^{1/4}+1=0$
$[t^{1/4}-1][t^{1/4}-1]=0$
$(t^{1/4}-1)^2=0$
$t^{1/4}-1=0$
$t^{1/4}=1$
$t=1^4$
$t=1$
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