Question

Resolva a equação ×(×-11)=0de duas maneiras diferentes

Answer 1

  A)      x(x - 11) = 0
            x  =  0
            x-11 = 0 --> x = 11

             S --> x' = 0
                      x"= 11
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B)  Usando Báskara

        x(x - 11) = 0
         x²  - 11x = 0  .............a = 1
                                           b = -11
                                           c =  0
     Δ = b²-4ac = (-11)² - 4.1.0 = 121 =0 = 121
    √Δ= +-√121 = +-11

       x' = (11+11)/2 = 22/2 = 11
       x"= (11- 11)/2 = 0/2   = 0
         
               S --> x' = 0
                        x"= 11