Question

Which of the following shows that polynomials are closed under subtraction when polynomial 5x − 6 is subtracted from 3x2 − 6x + 2?

Answer 1

Answer:

You can simply sum and subtract the terms with the same power of x: changing the sign of everything inside the second brackets, we have that the expression is

3x2−2−2x2+6x−3

Rearrange it so that the exponents are in order:

3x2−2x2+6x−2−3

Now you can sum the terms involving x2 and the constants:

x2+6x−5

Step-by-step explanation:

hope it help•○●