Question

2 questao calcule as equaçoes do 2 grau
A) X2+ 2X -3=0
B) X2-6x +9=0
C)-x2 +4x -5=0​

Answer 1

Resposta:

2 a) 2x+2x= 3

4x=3

x=7

b)2x-6x=9

-4x = 9

x= 6

c) 2x=5

x=7