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Add the following polynomials, then place the answer in the proper location on the grid. Write answer in descending powers of x. Add: x^5 - 4x^4 + 7x^3 + 8, 9x^3 + 7x^2 - 10, and -2x^5 + 7x^4 - 3x + 8.
(x^5 - 4x^4 + 7x^3 + 8) + (9x^3 + 7x^2 - 10) + (-2x^5 + 7x^4 - 3x + 8) = (x^5 - 4x^4 + 16x^3 + 7x^2 - 2) + (-2x^5 + 7x^4 - 3x + 8) = -x^5 + 3x^4 + 16x^3 + 7x^2 - 3x + 6
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Asked 9/11/2014 9:08:00 AM
Updated 9/12/2014 11:17:37 AM
1 Answer/Comment
Edited by andrewpallarca [9/12/2014 11:15:47 AM]
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(x^5 - 4x^4 + 7x^3 + 8) + (9x^3 + 7x^2 - 10) + (-2x^5 + 7x^4 - 3x + 8)
= (x^5 - 4x^4 + 16x^3 + 7x^2 - 2) + (-2x^5 + 7x^4 - 3x + 8)
= -x^5 + 3x^4 + 16x^3 + 7x^2 - 3x + 6
Added 9/12/2014 11:17:37 AM
This answer has been confirmed as correct and helpful.
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This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [9/9/2014 3:19:03 AM]
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This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [9/9/2014 3:19:15 AM]
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Updated 11/21/2014 3:03:42 PM
1 Answer/Comment
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