Question 215685
Multiply and simplify. 
[ (5t^3)/(4t – 8) ] [ (6t - 12) / (10t) ]
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Factor where you can:
[ (5t^3)/(4(t – 2) ] [ (6(t - 2) / (10t) ]

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Cancel factors common to numerator and denominator
such as, (t-2), 5, t, 2, to get:
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[ (t^2)/4] [ (6/ (2) ]
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Cancel the "2" again to get:
= (3/4)t^2
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Cheers,
Stan H.