Đại số lớp 8
Các câu hỏi tương tự
GIẢI PHƯƠNG TRÌNH SAU
A) \(\frac{X^2+2X+1}{X^2+2X+2}+\frac{X^2+2X+2}{X^2+2X+3}=\frac{7}{6}\)
B) \(\frac{\left(X^2-3X-4\right)^4}{\left(X-3\right)^5\left(X+2\right)^3}+\frac{\left(X^2+4X+3\right)^6}{\left(X-3\right)^3\left(X+2\right)^5}=0\)
Giải phương trình :
\(20\left(\dfrac{x-2}{x+1}\right)^2-5\left(\dfrac{x+2}{x-1}\right)^2+48\left(\dfrac{x^2-4}{x^2-1}\right)=0\)
giải phương trình sau :
a) \(\left(2x+1\right)\left(x+1\right)^2\left(2x+3\right)=18\)
b) \(3x^4-13x^3+16x^2-13x+3=0\)
c) \(\left(x+3\right)^4+\left(x+5\right)^4=16\)
Giải phương trình:
a, \(2x^3+3x^2+6x+5=0\) b, \(4x^4+12x^3+5x^2-6x-15=0\) c, \(\left(x+1\right)\left(x+2\right)\left(x+3\right)\left(x+4\right)\left(x+5\right)=40\)
Giải phương trình:
a) \(\frac{x+\frac{2\left(3-x\right)}{5}}{14}-\frac{5x-4\left(x-1\right)}{24}=\frac{7x+2+\frac{9-3x}{5}}{12}+\frac{2}{3}\)
b) \(\frac{3}{10}\left(1,2-x\right)-\frac{5+7x}{4}=\frac{1}{20}\left(9x+0,2\right)-\frac{12,5x+4,5}{5}\)
giải phương trình
1. frac{2x+3}{5x-3}-frac{3}{4x-6}frac{2}{5}
2. frac{1}{x-1}-frac{7}{x-2}frac{1}{left(x-1right)left(2-xright)}
3. x+frac{x-1}{x-2}3+frac{1}{x-2}
4. frac{x+1}{x-3}-frac{1}{x-1}frac{2}{left(x-1right)left(x-3right)}
5. frac{2x-1}{x+1}+frac{x}{left(x-1right)left(x-2right)}frac{6x-2}{x-2}
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giải phương trình
1. \(\frac{2x+3}{5x-3}\)-\(\frac{3}{4x-6}\)=\(\frac{2}{5}\)
2. \(\frac{1}{x-1}\)-\(\frac{7}{x-2}\)=\(\frac{1}{\left(x-1\right)\left(2-x\right)}\)
3. x+\(\frac{x-1}{x-2}\)=3+\(\frac{1}{x-2}\)
4. \(\frac{x+1}{x-3}\)-\(\frac{1}{x-1}\)=\(\frac{2}{\left(x-1\right)\left(x-3\right)}\)
5. \(\frac{2x-1}{x+1}+\frac{x}{\left(x-1\right)\left(x-2\right)}=\frac{6x-2}{x-2}\)
Giải phương trình sau \(\left(x^2+11x12\right)\left(x^2+9x+20\right)\left(x^2+13x+42\right)=36\left(x^2+11x+30\right)\left(x^2+11x+31\right)\)
Giải phương trình:
a)dfrac{x-49}{50}+dfrac{x-50}{49}dfrac{49}{x-50}+dfrac{50}{x-49}
b)dfrac{x+14}{86}+dfrac{x+15}{85}+dfrac{x+16}{84}+dfrac{x+17}{83}+dfrac{x+116}{4}0
c)dfrac{1}{left(x^2+5right)left(x^2+4right)}+dfrac{1}{left(x^2+4right)left(x^2+3right)}+dfrac{1}{left(x^2+3right)left(x^2+2right)}+dfrac{1}{left(x^2+2right)left(x^2+1right)}-1
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Giải phương trình:
a)\(\dfrac{x-49}{50}\)+\(\dfrac{x-50}{49}=\dfrac{49}{x-50}+\dfrac{50}{x-49}\)
b)\(\dfrac{x+14}{86}+\dfrac{x+15}{85}+\dfrac{x+16}{84}+\dfrac{x+17}{83}+\dfrac{x+116}{4}=0\)
c)\(\dfrac{1}{\left(x^2+5\right)\left(x^2+4\right)}+\dfrac{1}{\left(x^2+4\right)\left(x^2+3\right)}+\dfrac{1}{\left(x^2+3\right)\left(x^2+2\right)}+\dfrac{1}{\left(x^2+2\right)\left(x^2+1\right)}=-1\)
Giải phương trình sau : 20\(\left(\frac{x-2}{x+1}\right)^2\)-5\(\left(\frac{x+2}{x-1}\right)^2\)+48\(\frac{x^2-4}{x^2-1}\)=0