Answer:
-1/2 + i/10 sqrt(55) , -1/2 - i/10 sqrt(55)
Step-by-step explanation:
5x^2+5x+4=0
a=5 b= 5 c=4
Using the quadratic formula
-b ± sqrt( b^2 -4ac)
---------------------------------
2a
-5 ± sqrt( 5^2 - 4(5)(4))
----------------------------------
2(5)
-5±sqrt( 25 - 80)
----------------------------
10
-5± sqrt(-55)
--------------------------
10
-5/10 ± 1/10 i sqrt(55)
-1/2 + i/10 sqrt(55) and -1/2 - i/10 sqrt(55)
