Question

Alguem sabe resolver essa conta X2 - 49 - 0

Answer 1

x^2-49-0=0
x^2=0+0+49
x^2=49
x= raiz de 49
x= -/+ 7

Answer 2

x²-49=0
x²=49
x=√49
x=+-7

x=7
ou x=-7