3分之4拍r3方
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即y=3x/2z=2x代入原式=(5x²+9x²/2-4x²)/(2x²-27x²/4-4x²)=(11x²/2)/(-35x
设A/2=B/3=C/4=R则A=2RB=3RC=4RA²/(AB+BC+AC)=4R²/(6R²+12R²+8R²)=2/13B²/(AB
最简公分母都是正的啊~没有带负号的啊~当然你说答案是负的其实也没有错,但是考试的时候,最好结果是不带负号的~
-4分之3二次方+丨-0.25丨=-16分之9+4分之1=-16分之9+16分之4=-16分之5
∵y/x=3∴y=3x∴原式=(3x²-12x²+18x²)/(6x²-3x*3x+7*9x²)=9x²/(60x²)=3/20
拍是什么再问:题目打错了不好意思再答:那你想打什么呢
∵y分之x=5∴x=5y(4x²-5xy-6y²)分之(x²-2xy+3y²)=(100y²-25y²-6y²)分之(25y
a为锐角,cos(a+π/6)=3/5则:sin(a+π/6)=4/5sin(a-π/12)=sin[(a+π/6)-π/4]=sin(a+π/6)cos(π/4)-cos(a+π/6)sin(π/4
把每个式子因式分解x的方+5x+4=(x+1)(x+4)x方-5x+6=(x-2)(x-3)………………
迷路的蝴蝶8:您好.将球体公式直接代入方程式:4×3.14×R³÷3=550012.56R³=5500×3=16500R³=1313.6942R=10.96(m)直径=1
tan(a+π/4)=(tana+tan(π/4))/[1-tana*tan(π/4)]=(3+1)/(1-3*1)=-2没有疑问请采纳为满意答案,再答:没有疑问请采纳为满意答案,谢谢。
(3b²/4a²)x(-a/6b)=-3ab²/(4a²x6b)=-b/(8a)(8a分之负b)
=(x-4)/(x+1)(x-1)除以(x-4)(x+1)/(x+1)平方+1/(x-1)=(x-4)/(x+1)(x-1)乘以(x+1)平方/(x-4)(x+1)+1/(x-1)=(x-4)/(x+
1^2=1*2*3/61^2+2^2=2*3*5/61^2+2^2+3^2=3*4*7/61^2+2^2+3^2+...+n^2=n(n+1)(2n+1)/6!
(x-1)/(x^2+3x+2)+6/(2+x-x^2)-(10-x)/(4-x^2)=(x-1)/(x+1)(x+2)-6/(x+1)(x-2)-(x-10)/(x+2)(x-2)=[(x-1)(x
infour-quartertime这首乐曲为四分之四拍.Thispieceisinfour-quartertime.
n*(n+1)*(2n+1)/6
-1再问:若a的绝对值等于3,b的绝对值等于8,<a,b>等于120°,则(a+b)×(a-b)等于不需要步骤
设小芳每分钟x下(3+2)x+3(x-6)=2705x+3x-18=2708x=270+188x=288x=36小园36-6=30下