Có MTC = 2 :
\(x^2=\dfrac{x^2}{1}=\dfrac{2x^2}{2}\)
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Bài 2: Phương trình bậc nhất một ẩn và cách giải
Các câu hỏi tương tự
giải phương trình 1)dfrac{1-6x}{x-2}+dfrac{9x+4}{x+2}dfrac{xleft(3x-2right)+1}{x^2-4}2) dfrac{3x+2}{3x-2}-dfrac{6}{2+3x}dfrac{9x^2}{9x^2-4}3) dfrac{x+5}{3x-6}-dfrac{1}{2}dfrac{2x-3}{2x-4}4) dfrac{x-1}{x}+dfrac{1}{x+1}dfrac{2x-1}{2x^2+2}5) dfrac{2}{x+1}+dfrac{3x+1}{x+1}dfrac{1}{left(x+1right)left(x-2right)}
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giải phương trình 1)\(\dfrac{1-6x}{x-2}+\dfrac{9x+4}{x+2}=\dfrac{x\left(3x-2\right)+1}{x^2-4}\)2) \(\dfrac{3x+2}{3x-2}-\dfrac{6}{2+3x}=\dfrac{9x^2}{9x^2-4}\)3) \(\dfrac{x+5}{3x-6}-\dfrac{1}{2}=\dfrac{2x-3}{2x-4}\)4) \(\dfrac{x-1}{x}+\dfrac{1}{x+1}=\dfrac{2x-1}{2x^2+2}\)5) \(\dfrac{2}{x+1}+\dfrac{3x+1}{x+1}=\dfrac{1}{\left(x+1\right)\left(x-2\right)}\)
Giải các phương trình
a)3x-22x-3 c)11x+42-2x100-9x-22
b)2x+35x+9 d)2x-(3-5x)4(x+3)
e)dfrac{3x+2}{2}-dfrac{3x+1}{6}dfrac{5}{3}+2x
f)dfrac{x+4}{5}-x+4dfrac{x}{3}-dfrac{x-2}{2}
g)(2x+1)(x-1)0
h)(x+dfrac{2}{3})(x-dfrac{1}{2})0
i)(3x-1)(2x-3)(2x-3)(x+5)0
k)3x-152x(x-5)
m)left|x-2right|3
n)left|x+1right|left|2x+3right|
j)dfrac{7x-3}{x-1}dfrac{2}{3}
đ)dfrac{2left(3-7xright)}{1+x}dfrac{1}{2}
y)dfrac{x+5}{x-5}-dfrac{x-5}{x+5}dfrac{20}{x^2-25}
dfrac{1}{x-1...
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Giải các phương trình
a)3x-2=2x-3 c)11x+42-2x=100-9x-22
b)2x+3=5x+9 d)2x-(3-5x)=4(x+3)
e)\(\dfrac{3x+2}{2}-\dfrac{3x+1}{6}=\dfrac{5}{3}+2x\)
f)\(\dfrac{x+4}{5}-x+4=\dfrac{x}{3}-\dfrac{x-2}{2}\)
g)(2x+1)(x-1)=0
h)(x+\(\dfrac{2}{3}\))(x-\(\dfrac{1}{2}\))=0
i)(3x-1)(2x-3)(2x-3)(x+5)=0
k)3x-15=2x(x-5)
m)\(\left|x-2\right|=3\)
n)\(\left|x+1\right|=\left|2x+3\right|\)
j)\(\dfrac{7x-3}{x-1}=\dfrac{2}{3}\)
đ)\(\dfrac{2\left(3-7x\right)}{1+x}=\dfrac{1}{2}\)
y)\(\dfrac{x+5}{x-5}-\dfrac{x-5}{x+5}=\dfrac{20}{x^2-25}\)
\(\dfrac{1}{x-1}+\dfrac{2}{x+1}=\dfrac{x}{x^2-1}\)
Giải phương trình 1, dfrac{1-6x}{x-2}+dfrac{9x+4}{x+2}dfrac{xleft(3x-2right)+1}{x^2-4}2, dfrac{3x+2}{3x-2}-dfrac{6}{2-3x}dfrac{9x^2}{9x^2-4}3, dfrac{x-1}{x}+dfrac{1}{x+1}dfrac{2x-1}{2x^2+2}4, dfrac{2}{x+1}+dfrac{3x+1}{x+1}dfrac{1}{left(x+1right)left(x-2right)}5, dfrac{x+5}{3x-6}-dfrac{1}{2}dfrac{2x-3}{2x-4}
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Giải phương trình
1, \(\dfrac{1-6x}{x-2}+\dfrac{9x+4}{x+2}=\dfrac{x\left(3x-2\right)+1}{x^2-4}\)
2, \(\dfrac{3x+2}{3x-2}-\dfrac{6}{2-3x}=\dfrac{9x^2}{9x^2-4}\)3, \(\dfrac{x-1}{x}+\dfrac{1}{x+1}=\dfrac{2x-1}{2x^2+2}\)4, \(\dfrac{2}{x+1}+\dfrac{3x+1}{x+1}=\dfrac{1}{\left(x+1\right)\left(x-2\right)}\)5, \(\dfrac{x+5}{3x-6}-\dfrac{1}{2}=\dfrac{2x-3}{2x-4}\)
Giải phương trình:
a) dfrac{2x^2-x-1}{2}-3x^2+x+4left(5-xright)left(2x+4right)
b) dfrac{left(2x-5right)left(3x+7right)}{4}+2x-1dfrac{left(x-1right)left(2x+4right)}{2}+1
c) 8x3 - 1 8x2 + 4x + 2
d) (x2 + x + 1)(x2 - x + 1) x6 - 1
e) (x3 + 2x)(x2 + 4) (x4 + 6x2 + 8)(3 - 2x)
f) dfrac{x+97}{125}+dfrac{x-63}{35}dfrac{x-7}{21}+dfrac{x-27}{49}
Giúp mình với!!! Mình cần gấp!!! Câu nào cũng được nhe!!!
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Giải phương trình:
a) \(\dfrac{2x^2-x-1}{2}-3x^2+x+4=\left(5-x\right)\left(2x+4\right)\)
b) \(\dfrac{\left(2x-5\right)\left(3x+7\right)}{4}+2x-1=\dfrac{\left(x-1\right)\left(2x+4\right)}{2}+1\)
c) 8x3 - 1 = 8x2 + 4x + 2
d) (x2 + x + 1)(x2 - x + 1) = x6 - 1
e) (x3 + 2x)(x2 + 4) = (x4 + 6x2 + 8)(3 - 2x)
f) \(\dfrac{x+97}{125}+\dfrac{x-63}{35}=\dfrac{x-7}{21}+\dfrac{x-27}{49}\)
Giúp mình với!!! Mình cần gấp!!! Câu nào cũng được nhe!!!
giải pt \(\dfrac{13}{\left(x-3\right)\left(2x+7\right)}+\dfrac{1}{2x+7}=\dfrac{6}{x^2-9}\)
giải phương trình,giúp với ạ
\(\dfrac{x+1}{4}-\dfrac{5+2x}{8}=\dfrac{3-4x}{2}\)
\(\dfrac{4-3x}{5}-\dfrac{4-x}{10}=\dfrac{x+2}{2}\)
a.dfrac{5x+2}{6}-dfrac{8x-1}{3}dfrac{4x+2}{5}-5
b.x-dfrac{2x-5}{5}+dfrac{x+8}{6}7+dfrac{x-1}{3}
c.dfrac{x+1}{15}+dfrac{x+2}{7}+dfrac{x+4}{4}+60
d.dfrac{x-342}{15}+dfrac{x-323}{17}+dfrac{x-300}{19}+dfrac{x-273}{21}10
e.dfrac{x+97}{125}+dfrac{x-63}{35}dfrac{x-7}{21}+dfrac{x-77}{49}
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a.\(\dfrac{5x+2}{6}-\dfrac{8x-1}{3}=\dfrac{4x+2}{5}-5\)
b.\(x-\dfrac{2x-5}{5}+\dfrac{x+8}{6}=7+\dfrac{x-1}{3}\)
c.\(\dfrac{x+1}{15}+\dfrac{x+2}{7}+\dfrac{x+4}{4}+6=0\)
d.\(\dfrac{x-342}{15}+\dfrac{x-323}{17}+\dfrac{x-300}{19}+\dfrac{x-273}{21}=10\)
e.\(\dfrac{x+97}{125}+\dfrac{x-63}{35}=\dfrac{x-7}{21}+\dfrac{x-77}{49}\)
giải phương trình bằng cách đưa về dạng ax+b=0
\(\dfrac{5\left(x-1\right)+2}{6}-\dfrac{7x-1}{4}=\dfrac{2\left(2x+1\right)}{7}-5\)
Giải các phương trình
1,\(3x-1=0\\\) 4, \(\dfrac{x}{3}-\dfrac{x}{5}=4\)
2, \(2-x=3x+1\) 5, \(\dfrac{x-1}{4}+\dfrac{2x+1}{6}=\dfrac{3}{2}\)
3, \(2\left(x-2\right)-1=5x\)