Question

Which of the following shows that polynomials are closed under subtraction when polynomial 4x − 3 is subtracted from 2x2 − 5x + 1?

Answer 1

The subtraction is shown below,                           (3x² - 6x + 2) - (5x - 6)Distribute the negative to the subtrahend,                           (3x² - 6x + 2) - 5x + 6Combining like terms give us the answer to the question above,                           3xx² - 11x + 8. 
Hope this helps! :)