Use a Vertical Format to Add the Polynomials $$\begin{array} { r r } - 7 x ^ { 3 } & + 7 x - 6 \\5 x ^ { 2 } & + 8 x - 5 \\\hline\end{array}$$

question 66

Multiple Choice

Use a vertical format to add the polynomials.
- $$\begin{array} { r r } - 7 x ^ { 3 } & + 7 x - 6 \\5 x ^ { 2 } & + 8 x - 5 \\\hline\end{array}$$

• A) \(- 7 x ^ { 3 } + 12 x ^ { 2 } + 2 x - 5\)
• B) \(- 7 x ^ { 3 } + 5 x ^ { 2 } + 15 x - 11\)
• C) \(- 2 x ^ { 3 } + 15 x - 11\)
• D) \(- 2 x ^ { 3 } + 12 x ^ { 2 } - 6 x - 5\)

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Definitions:

Auctions

Competitive bidding processes where goods or services are sold to the highest bidder.

Winner's Curse

The tendency of auction winners to have paid more than the item's actual value, often due to competitive bidding and overestimation of worth.

Bid Shading

A strategy in auctions where bidders intentionally bid lower than their actual value to increase the chance of winning at a lower price.

Bid-rigging

A form of fraud where competitors conspire to determine the winner of a bidding process, undermining fair competition.