Question

75x²+30x+3=0 (Bháskara)

Answer 1

75x²+30x+3=0     /3
25x² +10x +1 =0
delta= d                 a=25   b=10  c=1
d= b² - 4.a.c
d= 10² - 4.25.1
d= 100 - 100
d=0

x= -b+ou-$\sqrt{d}$/2.a

x'=-10+$\sqrt{0}$/2.25
x'=-10+0/50
x'=-10/50     (/10)
x'=-1/5

x"= -b+ou-$\sqrt{d}$/2.a
x"= -10-$\sqrt{0}$/2.25
x"= -10-0/50
x"=-10/50       (/10)
x"= -1/5

Answer 2

Boa noite Breno

75x² + 30x + 3 = 0 

delta
d² = 30² - 4*75*3
d² = 900 - 900 = 0
d = 0

x = (-30/150) = -1/5