Question

Encontre o conjunto x2-121=0

Answer 1

x2 -121=0
x2 = 121
x=+-(simbolo da raiz quadrada)121=0
x=+-11
S={-11,+11}

Answer 2

x² - 121 = 0
x² = 0 + 121
x² = 121
x =+√121
x = +11
S = {+11}