Question

considere a equação 2x²-50. Resolva com a formula de bhaskara

Answer 1

2x² - 50 = 0
2x² = 50
x² = 50/2
x² = 25
x = √25
x = + 5 e x = - 5
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
Báscara:

2x² - 50 = 0
a = 2; b = 0; c = - 50

Δ = b² - 4ac
Δ = 0² - 4.2.(-50)
Δ = - 8.(-50)
Δ = 400

x = - b +/- √Δ    =  - 0 +/- √400
      --------------      -------------------
            2a                     2.2

x = - 20
      -------  =  - 5
         4

x =  20
      ------  = + 5
         4

R.: x = 5 e x = - 5

Answer 2

a=2 b=0 c=-50 x= 0+-=√0-4.2.(-50)
                                          2.2   
0+-=√400
          4
x¹= +√400= 20:4 = 5
x²= - √400= -20:4 = -5