(a±bf=a2±2ab + b-
n\ n\
(x2 -2x +1)4 = [(x -1)2]4 = (x -1)
A
1 1 ■\   ~i,  3> i
3\ 2     ,        9 '
xH—   = x +3xH— 2/ 4
xz + 3xJ+5 (  3\2 n n
i               /     3V   9         /     3V    11 /   3\2 n
%2 + 3% + 5=% + ----h 5=  % + -   H-- (x
2/4 V     2/ 4
(x + a)2 = x2 + 2ax + a'
—x1 + 2x + 2 -(x2 -2x-2) = -[(x -1)2 - 3] = 3 - (x -1)2 (x-l)2 = 3       x-\ = ±yí9
x + 3    x —3
-+--2
x — 3    x +3
(x + 3)2 (x-3)2        2(x + 3)(x-3)
■ +
(x + 3)(x-3)    (x + 3)(x-3)     (x + 3)(x-3)
(x + 3-(x-3))2 36
x
2-9 x2-9
\/a + b+lJlď? ■y/a + b-2y/äbf = yj <f+^2^y^^^2yí^)' = yj{a + b)2-4ab' =
I
= y/a2 + b2-2ab' = y/\a- b)2''=\a- b\
{/{r^y, = /(^)? = j4, = 2 = \i-3\^
x2-l
J-T—? (-oo;-l)u(l;+oo)
Sudá: f(—x)= f (x) Lichá: / (—oc) = —f (x)
.x
)X
e V =ex+y
e «2.718281828...
e-x = l/e;
(exf=e
xy
2X+1+2X = 192 2x-2 + 2x=3-2x = 192
2X = 64
ln(ab) = ln<2 + ln £
x = 6
2lo&*=loe.,.2I
ln(xa) = or ln x
In b logc £ ln^ logc<z
lnO = -
oo