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Answers for 15, 17, and 19

Answers for 15, 17, and 19-example-1
User Niktrs
by
6.9k points

1 Answer

3 votes

Answer:

15) 3x^2-3x+2

17) 4x^3+3x^2-4x

19) 3x^3-2x^2-8x+3

Explanation:

15) (4x^2-x-3) - (x^2+2x-5)

4x^2 -x-3 -x^2 -2x +5 Multiply the right side by -1, then remove ()

4x^2 -x^2 -x-2x +5-3 Combine like terms

3x^2-3x+2 Final Answer

17) (7x^3 +3x^2 +4x +10) - (10 +8x+ 3x^3)

7x^3 +3x^2 +4x +10 - 10 -8x -3x^3 Multiply right side by -1, remove ()

7x^3 -3x^3 +3x^2 -8x +4x +10 -10 Combine like terms

4x^3 +3x^2 -4x Final Answer

19) (8x^3 +3x^2 -8x +10) - (7 +5x^2 +5x^3)

8x^3 +3x^2 -8x +10 -7 -5x^2 -5x^3 Multiply right side by -1, remove ()

8x^3 -5x^3 -5x^2 +3x^2 -8x +10 -7 Combine like terms

3x^3 -2x^2 -8x +3 Final Answer

User Ben Lings
by
8.2k points

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