Question

Resolva as equações incompletas

A) 5x^2 -3125 =0
B) 9x^2 -3x =
C) x^2 -49 =0
D) X^2 =1
E) 2x^2 -50 =0

Answer 1

Oi Sabrina

a) 

5x² - 3125 = 0
x² = 625
x1 = 25
x2 = -25

b) 

9x² - 3x = 0
3x² - x = 0
x*(3x - 1) = 0
x1 = 0
x2 = 1/3

c)

x² = 49
x1 = -7, x2 = 7

d)

x² = 1
x1 = -1
x2 = 1

e)

2x² = 50
x² = 25
x1 = 5
x2 = -5

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