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What does this simplify to in descending order?What is the degree of the simplified answer?

What does this simplify to in descending order?What is the degree of the simplified-example-1

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Given:

(y- 2) ( y² - 4y - 9)

Open the parenthesis

y(y² - 4y - 9) - 2(y² - 4y - 9)

y³ - 4y² - 9y - 2y² + 8y + 18

Re-arrange and simplify

y³ - 4y² - 2y² - 9y + 8y + 18

y³ - 6y² - y + 18

Hence, the simplified polynomial in descending order is:

y^3 - 6y^2 - y + 18

The degree is the highest exponent.

Thererfore, the degree of this simplified answer is 3

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