Question

Me ajudem tem aaaaaaaaaa

Answer 1

Resposta:

Explicação passo a passo:

$5x^{2} -3x-2=0$

$a=5$

$b=-3$

$c=-2$

Δ = $b^{2} -4.a.c$

Δ = $(-3)^{2} -4.(5).(-2)$

Δ  = $9+40$

Δ  = $49$

x = ( - b ± √Δ ) / 2a

x = ( 3 ± √49 ) / 10

x = ( 3 ± 7 )  / 10

x' = ( 3 + 7 ) / 10

x' = 10 / 10

x' = 1

x'' = ( 3 - 7 ) / 10

x'' = ( - 4 ) / 10

x'' = - 2 / 5

S = ( 1 ; - 2/5 }