Answer:
y = 3x² + 5x + 1
x = -b±√b²-4ac/2a
a = 3, b = 5 c = 1
x = -5±√5²-4(3)(1)/2(3)
x = -5±√25-12/6
x = -5±√13/6
-21.74
Step-by-step explanation:
-10.74=u+11
-10.74-11=u
-21.74=u
Answer: D
10+20=30