Question

Indique com (c) as equações completas do 2° grau e com (i) as incompletas:
a) x²-16=0 ( )
b) 4x²+3=0( )
c) x²-5x+9=0( )
d) 9x²=0( )
e) 5x²+2x+20=0( )​

Answer 1

a) x² - 16 = 0 (i)

b) 4x² + 3 = 0 (i)

c) x² - 5x + 9 = 0 (c)

d) 9x² = 0 (i)

e) 5x² + 2x + 20 = 0 (c)