Question

4x2-11x-3=0 equaçao 2 grau
baskara

Answer 1

resolução!

$4 {x}^{2} - 11x - 3 = 0$

∆ = (-11)^2 - 4 * 4 * (-3)

∆ = 121 + 48

∆ = 169

∆ =√169

∆ = 13

X ' = 11 + 13 / 8

X ' = 24 / 8

X ' = 3

X " = 11 - 13 / 8

X " = - 2 / 8

X = - 1/4

S = { 3 , - 1/4 }

Answer 2

4x² -11x -3 = 0

∆ = b² -4.a.c

∆ = (-11)² -4.4.(-3)

∆ = (121) + 48

∆ = 169

(-b ±√∆)/(2.a)

[-(-11) ±√169]/(2.4)

(-11 ± 13)/(16)

x' = (-11 + 13)/16

x' = 2/16

x' = 1/8

x'' = (-11 - 13)/16

x'' = -24/16

x'' = -6/4

x'' = -3/2

S = (1/8,-3/2)