Answer:
60 degrees
Step-by-step explanation:
ACD and ACB are complementary angles. Find ACB=30 degrees. Subtract 30 from 90 degrees. ACD=60 degrees.
9 (x + 5) the greatest common factor is 9
Answer:
.
Step-by-step explanation:
Answer:
a and -b is the answer
Step-by-step explanation:
(x-a)(x+b) = 0
x-a = 0 and x+b = 0
then
x = a and x = -b
Hint:
Use distributive property, then combine like terms.
I think you've got it from there :)
If you need more help, just comment on this.
If you still are confused, then see below.
Answer:
-45-22i+(10-15i)(5+3i)
-5-22i+50+30i-75i-45i
112i-45
