Question

resolva as equações do 2 grau:

a) X^2 = 2/3X

b) X^2 - 16/25= 0

c) 7X^2 = 0

Answer 1

a) x^2 = 2/3x
    x²=2/3x,x≠0
    3x³=2
    x³=2/3
    x=∛18/3,x≠0
    x=∛18/3
    x=0,87358

b) x^2 - 16/25= 0
    x²=16/25
    x=+-4/5
    x=4/5
    x=-4/5
    
c) 7x^2 = 0
    x²=0
    x=0

Bons Estudos!