49x^2 - 1 = 0 могите пожалуйста

Question

49x^2 - 1 = 0
могите пожалуйста

Answer 1

49x^2 - 1 = 0,
49x^2 = 1,
x^2 = 1 : 49,
x^2 = 1/49,
x = \/49,
x1 = 7, x2 = - 7

Comments

!!!!! х = \/1/49, х1 = 1/7, х2 = - 1/7