find the sum of 5+x-x^2-x^3,3x-5+2x^2-x^3,x+5+2x^3-5x^2. in algebraic expressions.
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Answer:
-4x^2+5x+5
Step-by-step explanation:
(5+x-x^2-x^3)+(3x-5+2x^2-x^3)
(-2x^3+x^2+4x)+(x+5+2x^3-5x^2)
-4x^2+5x+5
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