Question

resolva equacao incompleta
c) 5x2-45=0
d) 2x2-8x=0
e)x2-x=0
f)3x2-18x=0

Answer 1

Ola Rizolene

C) 

5x² - 45 = 0

5x² = 45

x² = 45/5 = 9

x1 = -3
x2 = +3

D)

2x² - 8x = 0

x² - 4x = 0

x*(x - 4) = 0

x1 = 0

x2 - 4 = 0

x2 = 4

E)

x² - x = 0 

x*(x - 1 = 0

x1 = 0

x2 - 1 = 0

x2 = 1

F) 

3x² - 18x = 0 

x² - 6x = 0

x*(x - 6) = 0

x1 = 0

x2 - 6 = 0

x2 = 6

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