Question

resolva,em ir,as equaçoes de segundo grau , x2= -49 ?

Answer 1

x²=49       se for x²
x=√49
x=7
 agora se for x2=49
x=49: 2
x=24,5

Answer 2

x² = - 49

x = +/- √-49

x = + / - 7i