p=(x-2)(x-4)(x-8)(x-16)....(x-1024) при x=35 в excel

1) х² -2х = х+2-х² х² - 2х - х +х² - 2 = 0 2х² - 3х - 2 =0 D=(-3)² - 4*2*(-2) = 9+16 = 25 = 5² x1= (3 - 5)/(2*2) = -2/4 =-0.5 x2 =(3+5)/4 = 8/4 = 2 2) 3х² -8х + 13 = (х-5)² 3х² - 8х + 13 = х² - 10х + 25 3х² - 8х + 13 - х² + 10х - 25 =0 2х² +2х -12 = 0 |÷2 x²+x - 6 =0 D=1² - 4*1*(-6) = 1 +24 = 25 = 5² x1= (-1-5)/ (2*1) = -6/2 =-3 x2= (-1+5)/2 = 4/2=2