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\(\left(\frac{8}{1.9}+\frac{8}{9.17}+\frac{8}{17.25}+.....+\frac{8}{49.57}\right)+2.\left(x-1\right)=\frac{2x+7}{3}+\frac{5x-8}{4}\)
1.Tìm x biết:left(1+frac{1}{2}+frac{1}{3}+...+frac{1}{2011}+frac{1}{2012}right).503x1+frac{2014}{2}+frac{2015}{3}+...+frac{4023}{2011}+frac{4024}{2012}2. Tìm x biết:left(frac{8}{1.9}+frac{8}{9.17}+...+frac{8}{49.57}right)+frac{58}{57}+2.left(x-1right)2x+frac{7}{3}+5x-frac{8}{4}3. Chứng minh với mọi n1 thì:left(1+frac{1}{1.3}right).left(1+frac{1}{2.4}right)....left(1+frac{1}{n.left(n+2right)}right)2
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1.Tìm x biết:
\(\left(1+\frac{1}{2}+\frac{1}{3}+...+\frac{1}{2011}+\frac{1}{2012}\right).503x=1+\frac{2014}{2}+\frac{2015}{3}+...+\frac{4023}{2011}+\frac{4024}{2012}\)
2. Tìm x biết:
\(\left(\frac{8}{1.9}+\frac{8}{9.17}+...+\frac{8}{49.57}\right)+\frac{58}{57}+2.\left(x-1\right)=2x+\frac{7}{3}+5x-\frac{8}{4}\)
3. Chứng minh với mọi n>1 thì:
\(\left(1+\frac{1}{1.3}\right).\left(1+\frac{1}{2.4}\right)....\left(1+\frac{1}{n.\left(n+2\right)}\right)<2\)
Tìm x:
\(\frac{8}{1.9}+\frac{8}{9.17}+...+\frac{8}{49.57}+\frac{58}{57}+2x-2=2x+\frac{7}{3}+5x-\frac{8}{4}\)
Giải phương trình:h) frac{99-x}{101}+frac{97-x}{103}+frac{95-x}{105}+frac{93-x}{107}-4i) frac{x+14}{86}+frac{x+15}{85}+frac{x+16}{84}+frac{x+17}{83}+frac{x+116}{4}0k) left(frac{8}{1.9}+frac{8}{9.17}+...+frac{8}{49.57}right)+frac{58}{57}+2left(x-1right)frac{2x+7}{3}+frac{5x-8}{4}l) frac{5x-150}{50}+frac{5x-102}{49}+frac{5x-56}{48}+frac{5x-12}{47}+frac{5x-660}{46}0
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Giải phương trình:
h) \(\frac{99-x}{101}+\frac{97-x}{103}+\frac{95-x}{105}+\frac{93-x}{107}=-4\)
i) \(\frac{x+14}{86}+\frac{x+15}{85}+\frac{x+16}{84}+\frac{x+17}{83}+\frac{x+116}{4}=0\)
k) \(\left(\frac{8}{1.9}+\frac{8}{9.17}+...+\frac{8}{49.57}\right)+\frac{58}{57}+2\left(x-1\right)=\frac{2x+7}{3}+\frac{5x-8}{4}\)
l) \(\frac{5x-150}{50}+\frac{5x-102}{49}+\frac{5x-56}{48}+\frac{5x-12}{47}+\frac{5x-660}{46}=0\)
Tìm x :
\(\frac{8}{1.9}+\frac{8}{1.17}+...+\frac{8}{49.57}+\frac{58}{57}+2x-2=2x+\frac{7}{3}+5x-\frac{8}{4}\)
giải các pt
\(a,\frac{2x-13}{2x-16}+\frac{2\left(x-6\right)}{x-8}=\frac{7}{8}+\frac{2\left(5x-39\right)}{3x-24}\)
\(b,x\left(x-2\right)\left(x-1\right)\left(x+1\right)=24\)
\(c,x^4+2x^3+5x^2+4x-12=0\)
gải pt
\(\frac{2x-13}{2x-16}+\frac{2\left(x-6\right)}{x-8}=\frac{7}{8}+\frac{2\left(5x-39\right)}{3x-24}\)
Giải các pt sau:
a, \(\frac{x+5}{4}-\frac{2x-3}{3}=\frac{6x-1}{8}+\frac{2x-1}{12}\)
b,\(\frac{\left(x+10\right)\left(x+4\right)}{12}-\frac{\left(x+4\right)\left(2-x\right)}{4}=\frac{\left(x+10\right)\left(x-2\right)}{3}\)
Giúp mình với ạ
Mọi người giải giúp mình bài này với:B2: Giải các PT sau:l) left(x-1right)left(5x+3right)left(3x-8right)left(x-1right)m) 2xleft(x-1right)x^2-1n) left(2-3xright)left(x+11right)left(3x-2right)left(2-5xright)o) frac{3}{7}x-1frac{1}{7}xleft(3x-7right)p) left(x-frac{3}{4}right)^2+left(x-frac{3}{4}right)left(x-frac{1}{2}right)0q) frac{1}{x}x+2left(frac{1}{x}+2right)left(x^2+1right)r) left(2x+3right)left(frac{3x+8}{2-7x}+1right)left(x-5right)left(frac{3x+8}{2-7x}+1right)s) left(x+2right)left(x-3right)l...
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Mọi người giải giúp mình bài này với:
B2: Giải các PT sau:
l) \(\left(x-1\right)\left(5x+3\right)=\left(3x-8\right)\left(x-1\right)\)
m) \(2x\left(x-1\right)=x^2-1\)
n) \(\left(2-3x\right)\left(x+11\right)=\left(3x-2\right)\left(2-5x\right)\)
o) \(\frac{3}{7}x-1=\frac{1}{7}x\left(3x-7\right)\)
p) \(\left(x-\frac{3}{4}\right)^2+\left(x-\frac{3}{4}\right)\left(x-\frac{1}{2}\right)=0\)
q) \(\frac{1}{x}x+2=\left(\frac{1}{x}+2\right)\left(x^2+1\right)\)
r) \(\left(2x+3\right)\left(\frac{3x+8}{2-7x}+1\right)=\left(x-5\right)\left(\frac{3x+8}{2-7x}+1\right)\)
s) \(\left(x+2\right)\left(x-3\right)\left(17x^2-17x+8\right)=\left(x+2\right)\left(x-3\right)\left(x^2-17x+33\right)\)
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