Question

5×^2-2×=0 com cálculo

Answer 1

Olá!

5x² - 2x = 0
x . (5x - 2) = 0
5x - 2 = 0
5x = 2
x' = 2/5
x" = 0

S = {0, 2/5}

Answer 2

Por fatoração


5x² - 2x = 0


x (5x - 2) = 0
x = 0


5x - 2 = 0
5x = 2
x = 2/5


S={ 0, 2/5 }
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Por bhaskara


5x² - 2x = 0



∆ = (-2)² - 4.5.0
∆ = 4


x = -(-2) ± √4/2.5

x = 2 ± 2/10


x = 2 - 2/10 = 0/10 = 0

x = 2 + 2/10 = 4/10 = 2/5


S={ 0, 2/5 }