Answer:
-5 + 12 i
Step-by-step explanation:
(2 + 3i)^2 = 4 + 6i + 6i + 9i^2
= 4 + 12 i + 9(-1)
= - 5 + 12 i
Answer:
The number is 7
Step-by-step explanation:
A number (x) multiplied by 8 = 8x divided by four gives;
8x ÷ 4 = 2x
The answer is seven more than the number i.e
2x = x + 7
2x - x = 7 , x = 7
So the number is 7.
Answer:
1.8
Step-by-step explanation:
18/10=1.8
False it only works if it has a 0 in example 1.50 then you could
