Question

respondem agora numero 4 pra mim

Answer 1

a) 2x^2-18=0

2x^2=18

x^2=18/2

x= raiz de 9

x=3

b)x^2+3=0

x^2= -3

x= raiz de -3

d)x^2-6=-19

x^2= -13

x= raiz de -13