30个大答案的二次近式算法？
1/6†1或3/5×(-5Ω3或≤3/5)
=1/6€(8/5)×(-5/3€(3/5))
=-5/18(24/25)
=-5/18×2/5€6
=-1/9₩6
(2)〒8/a×φ2a/b
=(8/a×2a/b)
=Ω(16/b)
=4/b(°b)
(3)乘以2x乘以2y乘以x
=(2x*2y*x)
=2 xäy
(4)2 a§4乙
=βa/2°b
=1/2b ab
(5)5βxyφ5 x^3
=5€(xy/5 x ma)
=1/x°5y
(6)✔x-y§x+y
=1/(x+y)†(x2-y2)
(7)§x(x+y)-xy^2/x+y(x>；0，y>；0)
=[x(x+y)†xy2/(x+y)]
=(x+y)/y
(8)xy乘6x 3y
=§6x2y†3y
=x≤2
(9)(°mn-°m/n)†m/n(n>；0)
=ämnäm/n-äm/näm/n
=n-1(10)φ3/8-(-3/4φ27/2+3≤1/6)
=1/4₩6+3/8₩6-1/2₩6
=1/8€6
(11)2/3-9 x+6 x/4-2 x†1/x
=2-3x+3/2°x-2°x
=5/2°x
(12)2/aβ4a+°1/a-2aβ1/a^3
=1/a a+1/a a-2/a
=0=0
(13)φ0.2m+1/m≤5立方米-m≤125/m
=1/5†5m+φ5m-5°5m
=-19/5¥5 m
(14)aa+b/a-b-äa-b/a+b-§1/a^2-b^2(a>；b>；0)
=1/(a-b2)α(a2-b2)-1/(a2-b2)≤1/(a2-b2)α1/(a2-b2)α(a2
=(a+b-a+b-1)/(a2-b2)α(a2-b2)
=(2b+1)/(a2-b2)†(a2-b2)
解不等式
(15)2x+φ32<；x+φ2
2x-x<ᅵ2-4ᅵ2
直达<-3 ☞ 216) ₩ 3/8 - (-3/4 ₩ 27/2 + 3 ₩ 1/6)
=1/2₩3/2+9/4\3/2\6
=1/4₩6+9/8₩6-1/2₩6
=7/8€6
(17)φ0.2m+1/m≤5立方米-m≤125/m
=†1/5*m+1/m≤5m*m^2-m≤25*5m/m
=1/5†5m+φ5m-5°5m
=-19/5¥5 m
(18)(φ45+φ27)+(φ1或1/3-φ125)
=3°5+3°3+°4/3-5°5
=3₩3+2/3\3+3\5\5\5
=5≤3-2≤5
(19)2/3至9 x+6 x/4-2 x≤1/x
=2°x+3°x
=3°x
20¥40¥5
====
=§8
=2̄2
21♂32/✔2
=§16*≤2/≤2
=§16
=4。
22♂4/5♂2/15
=§4/5*§15/2
=°(4/5*15/2)
=§6
23 2αa^3b/βab
=2 a2 ab/ab ab
=2ña2
=2|a|(24)₩18-₩32+₩2
====
=3†2-4\2+₩2
=0=0
(25)₩75-₩54+₩96-₩108
====
=5₩3-3₩6+4\6-6₩3
=§6-§3
=≤3(≤2-1)
(26)(φ45+φ18)-(φ8-φ125)
====
=3°5+3°2-3≤2+5†5
=8天5
(27)
(2，2+2，3-β2-β27)在这里通分，分子不变，分母分开前进，因为很难用，所以省略了。
=(2†2+2\3-₩2-3×3×3)
=(°)2-°3
(28)18abx(-2/b根号下有6aa2/a)
=1/4×(-2/b)×α(18ab×6a2/a)
=-1/(2b)×3a°(2b)
=-3a/(2b)°(2b)
(29)根号下50a2b(a)<0, b>零)
=α(25a2×2b)
=-5a†(2b)
(30)根号18×3/2根号20×(-1/3根号15)
=-1/3×3/2×φ(18×20*15)
=-1/2×φ5400
=-1/2×30₩6
=-15₩6