Mathematics, 24.07.2019 18:10, bryamp4268

Which of the following equations demonstrate that the set of polynomials is not closed under the certain operations?
a. addition: (x^2+x)+(x+1)=x^2+2x+1
b. division: (x^2-5x+3)/(x-2)=x-3+-3/x-2
c. multiplication: (x^2-5x+3)(x-5)=x^3-10x^2+28x-15
d. subtraction: (3x^4+x^3) - (-2x^4+x^3)=5x^4

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Which of the following equations demonstrate that the set of polynomials is not closed under the cer...