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
s
Question
Updated 9/12/2014 11:17:37 AM
Edited by andrewpallarca [9/12/2014 11:15:47 AM]
Rating
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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Updated 9/9/2014 3:19:43 AM
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Confirmed by jeifunk [9/9/2014 3:19:03 AM]
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Rated good by dinosaur1442905
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a^2b^2 - d^2 = (ab + d)(ab - d)
32,572,340
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