Evaluate 3+11t -9u3+11t−9u3, plus, 11, t, minus, 9, u when t=9t=9t, equals, 9 and u=11u=11u, equals, 11.
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Answer:
3+11+9-9×11×3+11×9-9×11×3
14+33+33+11
23+66
89
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