PRECISO DESSAS EQUAÇÕES URGENTE!-x² - 2x + 3 = 0x² + 4x + 4 =PRECISO DESSAS EQUAÇÕES URGENTE!-x² - 2x + 3 = 0x² + 4x + 4 = 03PRECISO DESSAS EQUAÇÕES URGENTE!
-x² - 2x + 3 = 0
x² + 4x + 4 = 0
3 x² - 8 + 10 = 0
8 x² - 2x - 1 = 0
x² + 11x + 28 = 0
3 x² - 2x = 0
4 x² - 9 = 0
10 x² - 11x + 1 = 0
Soluções para a tarefa
Respondido por
1
-x² - 2x + 3 = 0
Δ = b2 - 4.a.c
Δ = -2² - 4 . -1 . 3
Δ = 4 - 4. -1 . 3
Δ = 16
x = (-b +- √Δ)/2a
x' = (--2 + √16)/2.-1 x'' = (--2 - √16)/2.-1
x' = 6 / -2 x'' = -2 / -2
x' = -3 x'' = 1
x² + 4x + 4 = 0
Δ = b2 - 4.a.c
Δ = 4² - 4 . 1 . 4
Δ = 16 - 4. 1 . 4
Δ = 0
x = (-b +- √Δ)/2a
x' = (-4 + √0)/2.1 x'' = (-4 - √0)/2.1
x' = -4 / 2 x'' = -4 / 2
x' = -2 x'' = -2
3 x² - 8 + 10 = 0
Δ = b2 - 4.a.c
Δ = -8² - 4 . 3 . 10
Δ = 64 - 4. 3 . 10
Δ = -56
Nao tem raízes reais
8 x² - 2x - 1 = 0
Δ = b2 - 4.a.c
Δ = -2² - 4 . 8 . -1
Δ = 4 - 4. 8 . -1
Δ = 36
x = (-b +- √Δ)/2a
x' = (--2 + √36)/2.8 x'' = (--2 - √36)/2.8
x' = 8 / 16 x'' = -4 / 16
x' = 0,5 x'' = -0,25
x² + 11x + 28 = 0
Δ = b2 - 4.a.c
Δ = 11² - 4 . 1 . 28
Δ = 121 - 4. 1 . 28
Δ = 9
x = (-b +- √Δ)/2a
x' = (-11 + √9)/2.1 x'' = (-11 - √9)/2.1
x' = -8 / 2 x'' = -14 / 2
x' = -4 x'' = -7
3 x² - 2x = 0
Δ = b2 - 4.a.c
Δ = -2² - 4 . 3 . 0
Δ = 4 - 4. 3 . 0
Δ = 4
x = (-b +- √Δ)/2a
x' = (--2 + √4)/2.3 x'' = (--2 - √4)/2.3
x' = 4 / 6 x'' = 0 / 6
x' = 0,6666 x'' = 0
4 x² - 9 = 0
4x²=9
x²=9/4
x=+-√(9/4)
x1=+3/2 x2= -3/2
10 x² - 11x + 1 = 0
Δ = b2 - 4.a.c
Δ = -11² - 4 . 10 . 1
Δ = 121 - 4. 10 . 1
Δ = 81
x = (-b +- √Δ)/2a
x' = (--11 + √81)/2.10 x'' = (--11 - √81)/2.10
x' = 20 / 20 x'' = 2 / 20
x' = 1 x'' = 0,1
Δ = b2 - 4.a.c
Δ = -2² - 4 . -1 . 3
Δ = 4 - 4. -1 . 3
Δ = 16
x = (-b +- √Δ)/2a
x' = (--2 + √16)/2.-1 x'' = (--2 - √16)/2.-1
x' = 6 / -2 x'' = -2 / -2
x' = -3 x'' = 1
x² + 4x + 4 = 0
Δ = b2 - 4.a.c
Δ = 4² - 4 . 1 . 4
Δ = 16 - 4. 1 . 4
Δ = 0
x = (-b +- √Δ)/2a
x' = (-4 + √0)/2.1 x'' = (-4 - √0)/2.1
x' = -4 / 2 x'' = -4 / 2
x' = -2 x'' = -2
3 x² - 8 + 10 = 0
Δ = b2 - 4.a.c
Δ = -8² - 4 . 3 . 10
Δ = 64 - 4. 3 . 10
Δ = -56
Nao tem raízes reais
8 x² - 2x - 1 = 0
Δ = b2 - 4.a.c
Δ = -2² - 4 . 8 . -1
Δ = 4 - 4. 8 . -1
Δ = 36
x = (-b +- √Δ)/2a
x' = (--2 + √36)/2.8 x'' = (--2 - √36)/2.8
x' = 8 / 16 x'' = -4 / 16
x' = 0,5 x'' = -0,25
x² + 11x + 28 = 0
Δ = b2 - 4.a.c
Δ = 11² - 4 . 1 . 28
Δ = 121 - 4. 1 . 28
Δ = 9
x = (-b +- √Δ)/2a
x' = (-11 + √9)/2.1 x'' = (-11 - √9)/2.1
x' = -8 / 2 x'' = -14 / 2
x' = -4 x'' = -7
3 x² - 2x = 0
Δ = b2 - 4.a.c
Δ = -2² - 4 . 3 . 0
Δ = 4 - 4. 3 . 0
Δ = 4
x = (-b +- √Δ)/2a
x' = (--2 + √4)/2.3 x'' = (--2 - √4)/2.3
x' = 4 / 6 x'' = 0 / 6
x' = 0,6666 x'' = 0
4 x² - 9 = 0
4x²=9
x²=9/4
x=+-√(9/4)
x1=+3/2 x2= -3/2
10 x² - 11x + 1 = 0
Δ = b2 - 4.a.c
Δ = -11² - 4 . 10 . 1
Δ = 121 - 4. 10 . 1
Δ = 81
x = (-b +- √Δ)/2a
x' = (--11 + √81)/2.10 x'' = (--11 - √81)/2.10
x' = 20 / 20 x'' = 2 / 20
x' = 1 x'' = 0,1
Perguntas interessantes