Các câu hỏi tương tự
Giải phương trình
\(\frac{13}{\left(2x+7\right)\left(x-3\right)}+\frac{1}{2x+7}=\frac{6}{x^2-9}\)
\(\left(1-\frac{2x-1}{x+1}\right)+6\left(1-\frac{2x-1}{x+1}\right)^2=\frac{12\left(2x-1\right)}{x+1}-20\)
Giải phương trình:1.frac{x-5}{x-5}+frac{x-6}{x-5}+frac{x-7}{x-5}+...+frac{1}{x-5}4left(xin Nright)2.frac{1}{x^2+3x+2}+frac{1}{x^2+5x+6}+frac{1}{x^2+7x+12}+...+frac{1}{x^2+15x+56}frac{1}{14}3.left(1+frac{1}{1.3}right)left(1+frac{1}{2.4}right)left(1+frac{1}{3.5}right)...left(1+frac{1}{xleft(x+2right)}right)frac{31}{16}left(xin Nright)4.8left(x^2+frac{1}{x^2}right)-34left(x+frac{1}{x}right)+5105.6x^4-5x^3-38x^2-5x+60
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Giải phương trình:
1.\(\frac{x-5}{x-5}+\frac{x-6}{x-5}+\frac{x-7}{x-5}+...+\frac{1}{x-5}=4\left(x\in N\right)\)
2.\(\frac{1}{x^2+3x+2}+\frac{1}{x^2+5x+6}+\frac{1}{x^2+7x+12}+...+\frac{1}{x^2+15x+56}=\frac{1}{14}\)
3.\(\left(1+\frac{1}{1.3}\right)\left(1+\frac{1}{2.4}\right)\left(1+\frac{1}{3.5}\right)...\left(1+\frac{1}{x\left(x+2\right)}\right)=\frac{31}{16}\left(x\in N\right)\)
4.\(8\left(x^2+\frac{1}{x^2}\right)-34\left(x+\frac{1}{x}\right)+51=0\)
5.\(6x^4-5x^3-38x^2-5x+6=0\)
Tính (thu gọn) :
\(\frac{3}{x\left(x+3\right)}+\frac{3}{\left(x+3\right)\left(x+6\right)}+\frac{3}{\left(x+6\right)\left(x+9\right)}+\frac{1}{x+9}\)
tính nhanh biểu thức sau:
A=\(\frac{1}{\left(x+1\right)\left(x+3\right)}+\frac{1}{\left(x+3\right)\left(x+5\right)}+\frac{1}{\left(x+5\right)\left(x+7\right)}+\frac{1}{\left(x+7\right)\left(x+9\right)}+\frac{1}{\left(x+9\right)\left(x+11\right)}\)
Giải các phương trình:a) frac{1}{x-1}-frac{3x^2}{x^3-1}frac{2x}{x^2+x+1}b) frac{3}{left(x-1right)left(x-2right)}+frac{2}{left(x-3right)left(x-1right)}frac{1}{left(x-2right)left(x-3right)}c) 1+frac{1}{x+2}frac{12}{8+x^3}d) frac{13}{left(x-3right)left(2x+7right)}+frac{1}{2x+7}frac{6}{left(x-3right)left(x+3right)}
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Giải các phương trình:
a) \(\frac{1}{x-1}-\frac{3x^2}{x^3-1}=\frac{2x}{x^2+x+1}\)
b) \(\frac{3}{\left(x-1\right)\left(x-2\right)}+\frac{2}{\left(x-3\right)\left(x-1\right)}=\frac{1}{\left(x-2\right)\left(x-3\right)}\)
c) \(1+\frac{1}{x+2}=\frac{12}{8+x^3}\)
d) \(\frac{13}{\left(x-3\right)\left(2x+7\right)}+\frac{1}{2x+7}=\frac{6}{\left(x-3\right)\left(x+3\right)}\)
a) frac{1}{x-1}-frac{3x^2}{x^3}frac{2x}{x^2+x+1} b)frac{3}{left(x-1right)left(x-2right)}+frac{2}{left(x-3right)left(x-1right)}frac{1}{left(x-2right)left(x-3right)}c)1+frac{1}{x+2}frac{12}{8+x^3}d) frac{13}{left(x-3right)left(2x+7right)}+frac{1}{2x+7}frac{6}{left(x-3right)left(x+3right)}giúp mình giải phương trình có ẩn này với ???
Đọc tiếp
a) \(\frac{1}{x-1}-\frac{3x^2}{x^3}=\frac{2x}{x^2+x+1}\)
b)\(\frac{3}{\left(x-1\right)\left(x-2\right)}+\frac{2}{\left(x-3\right)\left(x-1\right)}=\frac{1}{\left(x-2\right)\left(x-3\right)}\)
c)\(1+\frac{1}{x+2}=\frac{12}{8+x^3}\)
d) \(\frac{13}{\left(x-3\right)\left(2x+7\right)}+\frac{1}{2x+7}=\frac{6}{\left(x-3\right)\left(x+3\right)}\)
giúp mình giải phương trình có ẩn này với ???
1. \(\frac{7}{8}x-5\left(x-9\right)=\frac{20x+1,5}{6}\)
2 . \(\frac{\left(2x+1\right)^2}{5}-\frac{\left(x+1\right)^2}{3}=\frac{7x^2-14x-5}{15}\)
3 . \(4\left(3x-2\right)-3\left(x-4\right)=7x+10\)
4. \(\frac{\left(x+10\right)\left(x+4\right)}{12}-\frac{\left(x+4\right)\left(2-x\right)}{4}=\frac{\left(x+10\right)\left(x-2\right)}{3}\)
Tính nhanh giá trị biểu thức sau :
A= \(\frac{1}{\left(x+1\right)\left(x+3\right)}+\frac{1}{\left(x+3\right)+\left(x+5\right)}+\frac{1}{\left(x+5\right)\left(x+7\right)}+\frac{1}{\left(x+7\right)\left(x+9\right)}+\frac{1}{\left(x+9\right)\left(x+11\right)}\)
Rút gọn biểu thức sau: A=\(\left[\left(x^4-x+\frac{x-3}{x^3+1}\right).\frac{\left(x^3-2x^2+2x-1\right)\left(x+1\right)}{x^9+x^7-3x^2-3}+1-\frac{2\left(x+6\right)}{x^2+1}\right].\frac{4x^2+4x+1}{\left(x+4\right)\left(3-x\right)}\)