Answer
19$t^{2}$-11t+3
Work Step by Step
(18$t^{2}$-4t+2)-(-$t^{2}$+7t-1)
=18$t^{2}$-4t+2+$t^{2}$-7t+1
=18$t^{2}$+$t^{2}$-4t-7t+2+1
=19$t^{2}$-11t+3
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