10x+3x? +3=0
3x? + 10x+3=0
a=3,b= 10,c=3
△=b? -4ac
= 10? -4×3×3
= 100-36
=64
√△=√64=8
x=(-b √△)/2a
=(- 10 8)/6
=(-5 4)/3
x 1=(-5+4)/3=- 1/3
x2=(-5-4)/3=-3