Question

4. Assinale com X as equações do 1º grau:

a) ( ) 2x + 3 = 8.

d) ( ) x2 = 16.

b)( ) x + 9 = 10. e) ( ) 3x3 - 2 = 8.

c)( ) 5 + 2 = 7.

f) ( ) 2y = 20.

g) ( ) x-8 = 10.

h) ( ) 5y2 + 3 = 8.

i) ( ) 27 -1 = 0.​

Answer 1

Resposta:

a) (X) 2x + 3 = 8.

d) () x2 = 16.

b)(X) x + 9 = 10.

e) ( ) 3x3 - 2 = 8.

c)( ) 5 + 2 = 7.

f) (X) 2y = 20.

g) (X) x-8 = 10.

h) ( ) 5y2 + 3 = 8.

i) ( ) 27 -1 = 0.