Question

What should be added to x3-x2-x+1 to get 5x3-4x2+3x-1?
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Answer 1

Answer:

x^3-x^2-x+1+5x^3-4x^2+3x-1

x^3+5x^3-x^2-4x^2-x+3x+1-1

=6x^3-5x^2+2x

hope it is helpful