6000/x=10800/2x+20 x=?
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6000/x=10800/2x+20x=?6000/x=10800/2x+20x=?6000/x=10800/2x+20x=?约分10/x=9/(x+10)两边乘x(x+10)10x+100=9xx=
6000/x=10800/2x+20 x=?
6000/x=10800/2x+20 x=?
6000/x=10800/2x+20 x=?
约分
10/x=9/(x+10)
两边乘x(x+10)
10x+100=9x
x=-100
6000/x=10800/(2x)+20我猜你原本是要解这个
→6000/x=5400/x+20
→600/x=20
→x=30
而6000/x=10800/2x+20
→6000/x=5400x+20
→300/x=270x+1
→300=270x²+x
→x=-1/540+√32401/540或x=-1/540-√32401/540
6000/x=10800/2x+20 x=?
(20-2x)(20-2x)x>400 x=?
x-10+X+20+X/2+2X=370
x+10+x-20+2x+x/2=370
x/2+x/8+x/12+x/20=1
x(x+2)(x+6)+20x+6=0
(2-x)(6-x)(12-x)(20-x)=
f(x)=x^2+x (x
2x(x-1)-x(3x+2)=(-x-1)(x+6)-20
解方程X(X+1)-X(X-3)=2(X+1)(X-1)+20
x(x+1)²-x(x²-3)-2(x+1)(x-1)=20
15X(4X-8)-5X(2X+10)=6X(5X-20)
x^2=x
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,
(X+X)+(X-X)+(X*X)+(X/X)=100
x/x平方-x+2=2x/x+1
f(x)=x|x|+2x (x