Add: t-t2
+t3
, 4t3
+3t2
, 2t -5t3
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=(t-t2+t3)+(4t3+3t2)+(2t-5t3)
=t-2t+3t+12t+6t+2t-15t
=-1t+3t+12t+6t+2t-15t
=2t+12t+6t+2t-15t
=14t+12t+6t+2t-15t
=26t+6t+2t-15t
=34t-15t
=19t
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