course mth158

Question:* R.4.36 (was R.5.30). What is the single polynomial that is equal to 8 ( 4 x^3 - 3 x^2 - 1 ) - 6 ( 4 x^3 + 8 x - 2 )?

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Your solution:

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Question:

* R.4.60 (was R.5.54). What is the product (-2x - 3) ( 3 - x)?

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Your solution:

-6x-3x-6-3x=12x-3

Self-critique Rating:

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Question:

* R.4.66 (was R.5.60). What is the product (x - 1) ( x + 1) and how did you obtain your result using a special product formula?

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Your solution:

I used foil to get

Self-critique Rating:

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Question:

* R.4.84 (was R.5.78). What is (2x + 3y)^2 and how did you obtain your result using a special product formula?

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Your solution:

(2x)^2-2*3y*2x+2x+3y^2

And then Solve

4x^2-2*3y*4x+9y^2=(4x^2-24xy+9y^2)

Self-critique Rating:

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Question:

* R.4.105 \ 90 (was R.5.102). Explain why the degree of the product of two polynomials equals the sum of their degrees.

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Your solution:

because the sum of the two largest monomials equals the degree of the polynomial "