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You can use Excel or another spreadsheet to do the calculations. Put the numbers 1, 2, 3, ... in one column, the numbers 2, 3, 4, ... in the second column, and the product (for example, "=A1 * B1") in the third. Then add it all up.
There might be a shortcut to do this kind of calculation, but I don't know of any.
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Earn +20 ptsQ: What is the sume of 1x2 plus 2x3 plus 3x4 plus plus 2009x2010?
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Continue Learning about Math & Arithmetic
Factor 4x5 plus 6x3 plus 6x2 plus 9?
Rearrange: 4x5 + 6x2 + 6x3 + 9 Group: 2x2 (2x3 + 3) + 3 (2x3 + 3) Simplify to get your answer: (2x2 + 3) (2x3 + 3)
What is 7 plus 2x3?
13
2x3 plus 8x3-5x2 plus 8x2?
10x3 + 3x2
What does 2x3 plus 2x4 equal?
14 ________________ 14
What answer is equal to the sum in the expression below (3x3 plus 4x2 - 2x plus 1) plus (x4 - x3 plus 5x2 plus 2x plus 3)?
Answer this question…A. x4 + 2x3 + 9x2 + 4 B. x4 + 4x3 + 9x2 + 4 C. x4 + 2x3 + 9x2 + 4x + 4 D. x4 + 2x3 + 9x2 - 4x + 4
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