Answer:
x = ± 2i
Step-by-step explanation:
The equation has no real roots, gut has complex roots
Given
x² = - 4 ( take the square root of both sides )
x = ± 
= ± 
[ Note that
= i ]
= ±
×
= ± 2i
28÷2=14
The bus makes 14 stops every hour
14×3=42
The bus makes 42 stops in 3 hours
Hope my answer helped u :)
Answer:
9 Cards
Step-by-step explanation:
9 Cards a day equals 27 cards in 3 days
Answer: invalid input
Step-by-step explanation: