А) х⁶-10х⁴+11х³-х+14
х=-2;
(-2)⁶-10·(-2)⁴+11·(-2)³-(-2)+14=64-160-88+2+14=-168
б)а³-14а³-6аб²+б+2=-13а³-6аб²+б+2
а=-1;б=0,5;
-13·(-1)³-6·(-1)·(0,5)²+0,5+2=13+1,5+2,5=17
x1=-2
x2=3
......................
(а^2+2аb+b^2)-(a^2-2ab+b^2)=
=a^2+2ab+b^2-a^2+2ab-b^2=2ab+2ab=4ab
X = 6 - 3 + Y\3 = (9 - Y)\3