-3x^2-14x-7=x^2-2x+1
-3x^2-x^2-14x+2x-7-1=0
-4x^2-12x-8=0
D=(-12)^2-4×(-4)×(-8)=144-128=16
x1=12+4/2×(-4)=16/-8=-2
x2=12-4/2×(-4)=8/-8=-1
Y=x ; 2x-x=2; x=2 y-x=1 если x=2 то y= 2
(5 1/3)^7 • (3/16)^8=22741 целых 889/2187•6561/4294967296=4662699/134217728=790 98601649/3057647616
2х³-72х-144х-864-х+6х²-216
2х³-217х-1080+6х²
2х³+6х²-217х-1080