2.051.
aA-b
(a2-b2)(a2+W+a°</b) atyb+ay/E-btyb-Vďč   ' a tyb- W+a^/E
,2\-l/2
; a=4,91, b=0,09.
2.052. ((1 - x2)-'12 + 1 + : (2 - x2 - 2^1^)
2.053. ((1 - p2y1/2 - (1 + p2)"1/2)2 + 2(1- p4y1/2.
2 054    3a2+2ax—x2 _      2 + 10    a;r—3z2
(3x+a)(a+x)
a2 — Ete2 '
2.055. (4^i2 + felf-2) : 1^7=-^
1
1
x-y yx+y -1/2
2.056.
2.057. I f ^
ŕ>(aŕ>c+a+c)
X2 —xy
2.058.
2.059.
2.060.
2.061.
2.062.
2.063.
2.064.
2.065.
2.066.
2.067.
2.068.
((a + b+c) '■ (a      b+c)) '■ (l
b2+c2-a2
2bc      / '
a=l§,   6 = 0,625, c = 3, 2
riŤW ■ U2 x ■
2x—y       2x+y       2x—5y I ' 1x2—y2
(x2 + 2x-^):(x + l-^);a: = 7,(3) (6a2 + 5a-l + f±f):(3a-2 + ^T)
x-6-64 x2       _ 4x2(2x+l)
4+2x-1+x~2 ' 4-á+i 1_2x
2b+a-
a3b-2a2b2+ab3
bs+2ab2-3a2b a2-b2
yj xy4 — yJxAy— yjy^
V*-y/y
x
<fy)
x°+ v/ xy* — v/ x/-y—\l y"
ifiÄy- \ßr-
a1/'2+ah-
a-1/3_a-i/66-i/3+6-2/3 -3^
^:^"+bľC);a = 7,4,6=A
1 + 1 i 2 4c2 ' ä2" ab     a'2 b'2
37
1
2.069.
2.070.
2.071.
2.072.
2.073.
2.074.
2.075.
2.076.
2.077.
2.078.
2.079.
2.080.
2.081.
a7/3_2a5/3b2/3+ab4/3 a5/3_a4/36l/3_a62/3+a2/36
(a2-b2)(^E-</b)
v^4+ Väyž- V^b- W
(m—l)\/m— (n—l)^/n V m3n+mn+m2—m
: a
1/3
3/3
V a
^al/m_al/n^2^4a(m+n)/(mn)
(a2/m-a2/")('\/a'»+1+ \/are+1)
^1/m+3x1/n)2 — 12x(m+n)/(mn)
3V12
45
^ + 5VM( V15 + 3)
a2ř>2
a2-b2 ab
-1
a-3+6-3 • (a-ŕ>)2-3aŕ>
_1__i__2Í__,__
t2+3í+2 ^ í2+4í+3 ^ í2+5í+6;
1-^2,   b = l + VŽ
1      \2    ft-3)2 + 12ŕ
(a-b)2+ab . a5+b5+a2b'i+a'ib2 (a+b)2-ab ' (a3+63+a25+a52-)(a3_53-)
4i
x 1/2
/i-2
/t+2 ví271!
J     : ^r^4
2
Odpovědi: 2.051. 5 . 2.052. I-x2 2.053. 2/(1 - p4) 2.054. 1 2.055. ^F+y- ýx^y 2.056. 1/2 2.057. (x-y)/(x + y) 2.058. 1 2.059. l/(xy) 2.060. 24/(5y-2ar) . 2.061. 20 2.062. 2a + 3 2.063. 1 + 2x 2.064. (a-6)/(a + 6) 2.065. x + y 2.066. -(^Ť+^/y) 2.067. a5/6 2.068. 1 2.069. a^ + ö1/3 2.070. a- b 2.071. (y/m-y/ň)/m 2.072. - v7^ 2.073. 1 2.074.        * nr, 2.075. "1/m+^1/" 2.076. 6
2.077. 1/4 2.078. 2 2.079. \/2(m+3) 2.080. a-b 2.081. \/ŕ^r4/(ŕ+ 2)
3