Answer:
1234567891011121314151617181920
Step-by-step explanation:
Pretty sure it’s 4 idk tho this is a tough one. Hahahaha
A = -10 b = 12 c = -9
x = [-12 +- sq root (144 - 4*-10*-9)] / -20
x = [-12 +- sq root (144 -360)] / -20
x1 = 3/5 + (14.7 i / -20)
x2 = 3/5 - (14.7 i / -20)