Question

Determine as raiz real das equações:
x²+100x=0
x²+25x=0
2x²-200=0

Answer 1

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Ola Roseli

a) 

x² + 100x = 0

x*(x + 100) = 0

x1 = 0
x2 = -100

b)

x² + 25x = 0
x*(x + 25) = 0

x1 = 0
x2 = -25

c) 

2x² - 200 = 0

x² = 200/2 = 100

x1 = 10
x2 = -10

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