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Mathematics, 19.11.2019 06:31 dontcareanyonemo

Which of the following shows that polynomials are closed under subtraction when two polynomials, (4x2 βˆ’ 8x βˆ’ 7) βˆ’ (3x2 βˆ’ 5x + 16), are subtracted?

x2 βˆ’ 3x βˆ’ 23; will be a polynomial
x2 βˆ’ 3x βˆ’ 23; may or may not be a polynomial
x2 βˆ’ 13x + 9; will be a polynomial
x2 βˆ’ 13x + 9; may or may not be a polynomial

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Which of the following shows that polynomials are closed under subtraction when two polynomials, (4x...
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