Adding and Subtracting Polynomials Answers

What is the sum of the given polynomials in standard form?(x2 – 3x) + (–2x2 + 5x – 3)

Which property does each equation demonstrate?

associative property✔ closure propertycommutative property

associative propertyclosure property✔ commutative property

Find: (4x2y3 + 2xy2 – 2y) – (–7x2y3 + 6xy2 – 2y)

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The revenue, in dollars, of a company that produces video game systems can be modeled by the expression 5x2 + 2x – 80. The cost, in dollars, of producing the video game systems can be modeled by 5x2 – x + 100, where x is the number of video game systems sold. If profit is the difference between the revenue and the cost, what expression represents the profit?

8201,020✔ 2,8203,020

The revenue, in dollars, of a company that produces video game systems can be modeled by the expression 5x2 + 2x – 80. The cost, in dollars, of producing the video game systems can be modeled by 5x2 – x + 100, where x is the number of video game systems sold. If profit is the difference between the revenue and the cost, what expression represents the profit?

Question text not available

Question text not available

Lorne subtracted 6x3 – 2x + 3 from –3x3 + 5x2 + 4x – 7. Use the drop-down menus to identify the steps Lorne used to find the difference.

combined like termsgrouped like termswrote as addition of the additive inverse✔ wrote terms as addition of opposite

combined like terms✔ grouped like termswrote as addition of the additive inversewrote terms as addition of opposite

✔ combined like termsgrouped like termswrote as addition of the additive inversewrote terms as addition of opposite