Looks like a good question, using the mathematical term of "radical."
Answer:
0
Step-by-step explanation:
she will only use blue yarn
-2(x+9)-6=-24
-2x-18-6=-24
2x=0
x=0
2(x+9)-6=-24
2x+18-6=-24
2x=-36
x=-18
Answer:

Real part = 3 & imaginary part = 1
2) 4 + 7i - 8 = 4 -8 + 7i
= -4 + 7i
Real part = -4 & imaginary part = 7


Real part = -2 & imaginary part = -5

b) 1) 6 + 4i
2) -12+ 5i
3) 5-14i