Angelica is using synthetic division to divide 2x^3-9x^2-21x+10 by x+2 which answer is correct?

A

Step-by-step explanation:

Argument

C and D are wrong right off the top. When you have x + 2 in synthetic division the divisor (2) must change signs.

B is incorrect because you don't change the signs of the polynomial that is being divided into. So that only leaves A and it is correct.

Summary

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

the answer is two. hope this !