I think that the answer is (4,10). hope it helped :)
Answer:
1. -10x^2-x+6-10x 2-x+6 = -10x^2 - 22x + 12
2. 10x^2-510x 2-5 = 10x^2 - 1020x - 5
Step-by-step explanation:
hope this helps
if i did something wrong let me know so i can fix my answer
#Virgo2007
It is not factorable. Factors of 21 are. 21 and 1
7 and 3. None of those add up to 12

means you shade the part above the line, and

means you shade the part under the line.
If it has an equal bar under it, like this:

, then you also shade the line, by making it solid instead of dotting it.