The collection solution of 2 - (2 + 3x) ≦ 2 (x - 1) - 3 is

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Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

For the rule of 78, for a 12-month period, the last term in the sequence is 12 and the series sums to 78. for an 10 month period, the last term is and the series sum is . for a 15 month period, the last term is and the series sum is . for a 20 month period, the last term is and the series sum is