Question

5x²-12x+4=0 ?? bhaskara

Answer 1

5x²-12x+4=0 

a= 5      b= -12      c= +4
▲= b² -4.a.c= (-12)² -4.(5).(+4)= 144 - 80 = 64

x= (-b ± √▲)/2.a
x= [-(-12) ± √64]/2.5
x= [ +12 ± 8]/10
x'=[ 12 +8]/10 = 20/10 = 2
x"=[12-8]/10 =4/10     simplificando 4 e 10 por 2 =2/5

S{2 e 2/5}

Answer 2

a= 5 b=-12 c=4
$x= \frac{12+- \sqrt{(-12) ^{2} - 4. 5. 4} }{2.5}$
$x= \frac{12+- \sqrt{144-80} }{10}$
$x=12+- \frac{ \sqrt{64} }{10}$
x=12+-$\frac{8}{10}$
x'=$\frac{12+8}{10}$
x'=$\frac{20}{10}$
x'=2
x"=$\frac{12-8}{10}$
x"=$\frac{4}{10}$
x"=$\frac{2}{5}$
V=2, $\frac{2}{5}$