Question

срочно, 4 минуты осталось​

Answer 1

(x²-6)/7 = x/7

x²-6 = x

x²-x-6 = 0

D = b²-4ac = 1+24 = 25

x1 = (1+5)/2 = 3

x2 = (1-5)/2 = -2