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Let f(x) = -3x^2 + x - 4, g(x) = -5x^2 + 3x - 8, and h(x) = 6^x^2 - 7x - 3. Express f(x) + g(x) + h(x) as a single polynomial, with the terms in order by decreasing degree.

 Dec 10, 2020
 #1
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( -3x^2-5x^2 + 6^x^2)  + ( x + 3x-7x) + ( -4-8-3)      simplify from here

 Dec 10, 2020
 #2
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+1

-3x^2   + x  - 4

-5x^2  + 3x  -8

 6x^2   - 7x  -3

_____________

-2x^2  -3x  -15

 

cool cool cool

 Dec 10, 2020
edited by CPhill  Dec 10, 2020

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