Question

ayudenme solo procedimiento yo hago las graficas

Answer 1

Ajomayra,

Para determinar sus raices, una función debe ser nula
Entonces,

a)
           2x^2 - 2 = 0
  Factorizando
            2(x^2 - 1) = 0
Por lo menos uno de los factores deber ser nulo
            2 ≠ 0
            x^2 - 1 = 0
            x^2 = 1
            x = √1
                          x1 = - 1
                          x2 = 1
                                            S = {- 1, 1}         

b)
           2x^2 + 3x - 2 = 0
Factorizando
           (x + 2)(2x - 1) = 0
             x + 2 = 0
                                 x1 = - 2
            2x - 1 = 0
            2x = 1
                                 x2 = 1/2
                                                   S = {- 2, 1/2}

c)
             x^2 - 2x = 0
Factorizando
             x(x - 2) = 0
                 x = 0
                                   x1 = 0
                 x - 2 = 0
                                   x2 = 2
                                                   S = {0, 2}

d)
               - x^2 + 7 = 0
               - x^2 = - 7
                 x^2 = 7
                 x = √7
                                 x1 = - √7
                                 x2 = √7
                                                         S = {- √7, √7}

Si prefieres, puedes usar la fórmula resolutoria (Bhaskara).
Los resultados serán los mismos