Question

(x-√2)²=8 va roggggg frumossssa ma ajutatiiiiiiii

Answer 1

x²-2V2x + 2 = 8

x² - 2V2x +2-8 = 0

x²-2V2x-6 = 0

delta = (2V2)²+24 = 8+24 = 32

x1 = (2V2+V32)/2 = (2V2+4V2)/2 = 2(V2+2V2)/2 = V2+2V2

x2 = (2V2-4V2)/2 = 2(V2-2V2)/2 = V2-2V2