У=√х+1: 1; 1/2+1=3/2; 2; 3/2 + 1=5/2; 3; 5/2+1=7/2; 4; 5; 11/2;
у=√х-1: -1; -1/2; 0; 1/2; 1; 3/2; 2; 3; 7/2.
x²-2x-224
D= 4+896=900
x1= (2+30)/2= 16
x2= (2-30)/2= -14
(x-16)*(x+14)
или
x²-2x-224= x²-16x+14x-224= x(x-16)+14(x-16)= (x+14)*(x-16)
5x/(3-x)=5x(3+x)/(3-x)*(3+x)=5x*(3+x)/(x^2-9<span>)</span>
1) 2x*x*4y*y^2*x^2=
= 8*x^2*y^3*x^2=
=8*x^4*y^3
2) 2^10 : 2^9 * 3^2 =
= 2 * 9 = 18