Х^3 -4х^2-9х+36=0 Найти корни
(4х-3)(3х+0.6)=0
(4х+3)(3х+0.6)=0
(4х+3)(3х+0.6)=0 4х+3=0 (1) или 3х+0.6=0 (2) (1) 4х=-3
х=-3/4
(2) 3х=-0.6
х=-0.2 (1)х=-0.75;
(2)х=-0.2
Х³ -4х²-9х+36=0
x²(x-4)-9(x-4)=0
(x-4)(x²-9)=0
(x-4)(x-3)(x+3)=0
x-4=0 или x-3=0 или x+3=0
х=4 х=3 х=-3