(x^4 + x^3 - 2x^2 + 7x - 5) - (-3x^4 - x^3 - 2x^2 - 2x)
(x^4 + x^3 - 2x^2 + 7x - 5) - (-3x^4 - x^3 - 2x^2 - 2x) = (x^4 + x^3 - 2x^2 + 7x - 5) + (3x^4 + x^3 + 2x^2 + 2x) = 4x^4 + 2x^3 + 9x - 5
s
Updated 4/18/2019 9:08:55 AM
Edited by Masamune [4/18/2019 9:08:54 AM]
Rating
8
(x^4 + x^3 - 2x^2 + 7x - 5) - (-3x^4 - x^3 - 2x^2 - 2x)
= (x^4 + x^3 - 2x^2 + 7x - 5) + (3x^4 + x^3 + 2x^2 + 2x)
= 4x^4 + 2x^3 + 9x - 5

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