Chương 3: PHƯƠNG TRÌNH, HỆ PHƯƠNG TRÌNH
Các câu hỏi tương tự
1)2x(25x-4)-(5x-2)(5x+1)8 / 5)2left(x-2right)-3left(3x-1right)left(x-3right)
2)x(4x-3)-(2x-2)(2x-1)5 / 6)frac{2}{x+1}-frac{1}{x-2}frac{3x-11}{left(x+1right)left(x-2right)}
3)frac{5}{2x+3}+frac{3}{9-x^2}frac{8}{7left(x3right)} / 7)frac{5x-2}{6}+frac{3-4x}{2}2-frac{x+7}{3}
4)frac{2}{3left(x-2right)}+frac{5}{12-3x^2}frac{3}{4left(x+2right)} /...
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1)2x(25x-4)-(5x-2)(5x+1)=8 / 5)\(2\left(x-2\right)-3\left(3x-1\right)=\left(x-3\right)\)
2)x(4x-3)-(2x-2)(2x-1)=5 / 6)\(\frac{2}{x+1}-\frac{1}{x-2}=\frac{3x-11}{\left(x+1\right)\left(x-2\right)}\)
3)\(\frac{5}{2x+3}+\frac{3}{9-x^2}=\frac{8}{7\left(x=3\right)}\) / 7)\(\frac{5x-2}{6}+\frac{3-4x}{2}=2-\frac{x+7}{3}\)
4)\(\frac{2}{3\left(x-2\right)}+\frac{5}{12-3x^2}=\frac{3}{4\left(x+2\right)}\) / 8)\(\frac{2}{x+1}-\frac{1}{x-2}=\frac{3x-11}{\left(x+1\right)\left(x-2\right)}\)
26 tháng 10 2019 lúc 16:35
giải pt
a) x^2+4x-3left|x+2right|+40
b) left(x+2right)^2-3left|x+2right|-40
c) left(x^2-3right)^2-6left|x^2-3right|+50
d) frac{x^2-4x+4}{x^2-2x+1}+frac{left|2x-4right|}{x-1}3
e) left|frac{2x-1}{x+2}right|-2left|frac{x+2}{2x-1}right|1
f) x^2+frac{1}{x^2}-102left|x-frac{1}{x}right|
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giải pt
a) \(x^2+4x-3\left|x+2\right|+4=0\)
b) \(\left(x+2\right)^2-3\left|x+2\right|-4=0\)
c) \(\left(x^2-3\right)^2-6\left|x^2-3\right|+5=0\)
d) \(\frac{x^2-4x+4}{x^2-2x+1}+\frac{\left|2x-4\right|}{x-1}=3\)
e) \(\left|\frac{2x-1}{x+2}\right|-2\left|\frac{x+2}{2x-1}\right|=1\)
f) \(x^2+\frac{1}{x^2}-10=2\left|x-\frac{1}{x}\right|\)
26 tháng 10 2019 lúc 16:29
giải pt
a) sqrt{4x^2-12x+9}left|3x-2right|
b) sqrt{25x^2-10x+1}left|x+6right|
c) sqrt{16x^2-8x+1}left|x-3right|
d) left|5x+1right|2x-3
e) left|3x-4right|left|x-2right|
f) left|3x^2-2xright|left|6-x^2right|
g) left|x^2-2xright|left|2x^2-x-2right|
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giải pt
a) \(\sqrt{4x^2-12x+9}=\left|3x-2\right|\)
b) \(\sqrt{25x^2-10x+1}=\left|x+6\right|\)
c) \(\sqrt{16x^2-8x+1}=\left|x-3\right|\)
d) \(\left|5x+1\right|=2x-3\)
e) \(\left|3x-4\right|=\left|x-2\right|\)
f) \(\left|3x^2-2x\right|=\left|6-x^2\right|\)
g) \(\left|x^2-2x\right|=\left|2x^2-x-2\right|\)
Giải phương trình: \(\left(\sqrt{4x^4-12x^3+9x^2+16}-2x^2+3x\right)\left(\sqrt{x+3}+\sqrt{x-1}\right)=8\)
Giải hệa) left{{}begin{matrix}x^2left(y^2+1right)+2yleft(x^2+x+1right)3left(x^2+xright)left(y^2+yright)1end{matrix}right.b) left{{}begin{matrix}left(6x+5right)sqrt{2x+1}-2y-3y^30y+sqrt{x}sqrt{2x^2+4x-23}end{matrix}right.Giải bất ptdfrac{9}{left|x-5right|-3}geleft|x-2right|
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Giải hệ
a) \(\left\{{}\begin{matrix}x^2\left(y^2+1\right)+2y\left(x^2+x+1\right)=3\\\left(x^2+x\right)\left(y^2+y\right)=1\end{matrix}\right.\)
b) \(\left\{{}\begin{matrix}\left(6x+5\right)\sqrt{2x+1}-2y-3y^3=0\\y+\sqrt{x}=\sqrt{2x^2+4x-23}\end{matrix}\right.\)
Giải bất pt
\(\dfrac{9}{\left|x-5\right|-3}\ge\left|x-2\right|\)
giải hệ phương trình
1, left{{}begin{matrix}2x^2+3y173x^2-2y6end{matrix}right.
2, left{{}begin{matrix}left|x-1right|+left|y-1right|24left|x-1right|+3left|y-1right|7end{matrix}right.
3, left{{}begin{matrix}3sqrt{x-1}+2sqrt{y}22sqrt{x-1}-sqrt{y}4end{matrix}right.
4 , left{{}begin{matrix}x+y2left|2x-3yright|1end{matrix}right.
5 , left{{}begin{matrix}2x-y1left|x-yright|left|2y-1right|end{matrix}right.
6,left{{}begin{matrix}left(x-3right)left(y+6right)xyleft(x+2right)left(y-2right)xyend{matrix...
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giải hệ phương trình
1, \(\left\{{}\begin{matrix}2x^2+3y=17\\3x^2-2y=6\end{matrix}\right.\)
2, \(\left\{{}\begin{matrix}\left|x-1\right|+\left|y-1\right|=2\\4\left|x-1\right|+3\left|y-1\right|=7\end{matrix}\right.\)
3, \(\left\{{}\begin{matrix}3\sqrt{x-1}+2\sqrt{y}=2\\2\sqrt{x-1}-\sqrt{y}=4\end{matrix}\right.\)
4 , \(\left\{{}\begin{matrix}x+y=2\\\left|2x-3y\right|=1\end{matrix}\right.\)
5 , \(\left\{{}\begin{matrix}2x-y=1\\\left|x-y\right|=\left|2y-1\right|\end{matrix}\right.\)
6,\(\left\{{}\begin{matrix}\left(x-3\right)\left(y+6\right)=xy\\\left(x+2\right)\left(y-2\right)=xy\end{matrix}\right.\)
7 , \(\left\{{}\begin{matrix}\left(x-3\right)\left(2y+5\right)=\left(2x+7\right)\left(y-1\right)\\\left(4x+1\right)\left(3y-6\right)=\left(6x-1\right)\left(2y+3\right)\end{matrix}\right.\)
8 , \(\left\{{}\begin{matrix}4x^2-5\left(y+1\right)=\left(2x-3\right)^2\\3\left(7x+2\right)=5\left(2y-1\right)-3x\end{matrix}\right.\)
Giải các phương trình sau:
a, dfrac{x+1}{x^2+2x+4}-dfrac{x-2}{x^2-2x+4}dfrac{6}{xleft(x^4+4x+16right)}
b, left(12x+7right)^2left(3x+2right)left(2x+1right)3
c, x^4+2008x^2+2007x2008
d, 2xleft(8x-1right)^2left(4x-1right)9
e, x^4+2010x^2+2009x2010
g, left(x+y+zright)^3-x^3-y^3-z^30
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Giải các phương trình sau:
a, \(\dfrac{x+1}{x^2+2x+4}-\dfrac{x-2}{x^2-2x+4}=\dfrac{6}{x\left(x^4+4x+16\right)}\)
b, \(\left(12x+7\right)^2\left(3x+2\right)\left(2x+1\right)=3\)
c, \(x^4+2008x^2+2007x=2008\)
d, \(2x\left(8x-1\right)^2\left(4x-1\right)=9\)
e, \(x^4+2010x^2+2009x=2010\)
g, \(\left(x+y+z\right)^3-x^3-y^3-z^3=0\)
26 tháng 10 2019 lúc 16:25
giải pt
a) left|2x-1right|x+3
b) left|4x+7right|2x+5
c) left|2x^2-3x-5right|5x-5
d) left|x^2-4x-5right|4x-17
e) left|x-2right|3x^2-x-2
f) left|4x+1right|x^2+2x-4
g) sqrt{x^2+6x+9}left|2x-1right|
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giải pt
a) \(\left|2x-1\right|=x+3\)
b) \(\left|4x+7\right|=2x+5\)
c) \(\left|2x^2-3x-5\right|=5x-5\)
d) \(\left|x^2-4x-5\right|=4x-17\)
e) \(\left|x-2\right|=3x^2-x-2\)
f) \(\left|4x+1\right|=x^2+2x-4\)
g) \(\sqrt{x^2+6x+9}=\left|2x-1\right|\)
Giải các phương trình sau:
a)\(\left(x+1\right)^2-3\left|x+1\right|+2=0\)
b)\(4x\left(x-1\right)=\left|2x-1\right|+1\)
c)\(x^2+\frac{9}{\left(x-1\right)^2}+1=2x+7\left(\frac{x^2-2x-2}{x-1}\right)\)