Because change in y for the rise is if it goes up or down and change in x for the run to see if it goes left or right
(x + 9)(x + 12) = 0
Expanding the brackets, we get:
Answer:

Step-by-step explanation:
Theoretically, there is not square root of neither 13 nor a negative number so the special symbol is used to represent the square root of a number.
Answer:
23 Cm(2)
Step-by-step explanation:
Sincerest Apologies if it is incorrect
if it's not 23 it may be:
26 Cm(2)