Phương trình bậc nhất một ẩn
Các câu hỏi tương tự
Phân tích đa thức thành nhân tử
1, x^5+x^4+1
2, xleft(x+4right)left(x+6right)left(x+10right)+128
3, x^2-4xy+4y^2-2x+4y-35
4, x^4+6x^3+7x^2-6x+1
5, x^2left(y-zright)+y^2left(z-xright)+z^2left(x-yright)
6, xleft(y-zright)^3+yleft(z-xright)^3+xleft(x-yright)^3
7, x^{10}+x^5+1
Đọc tiếp
Phân tích đa thức thành nhân tử
1, \(x^5+x^4+1\)
2, \(x\left(x+4\right)\left(x+6\right)\left(x+10\right)+128\)
3, \(x^2-4xy+4y^2-2x+4y-35\)
4, \(x^4+6x^3+7x^2-6x+1\)
5, \(x^2\left(y-z\right)+y^2\left(z-x\right)+z^2\left(x-y\right)\)
6, \(x\left(y-z\right)^3+y\left(z-x\right)^3+x\left(x-y\right)^3\)
7, \(x^{10}+x^5+1\)
Bài 1:
a) a)left(x^2+yright)left(y^2+xright)left(x-yright)^2 x,yin Z
b)x^2left(y+3right)yz^2 x,y,zin Z_+
c)xleft(x+1right)left(x+7right)left(x+8right)y^2 x,yin Z_+
d)x^4+x^2-y^2+y+100 x,yin Z
e)x^3-y^3-2y^2-3y-10 x,yin Z_+
f)x^4-y^4+z^4+2x^2y^2+3x^2+4z^2+10 x,y,zin Z
Đọc tiếp
Bài 1:
a) \(a)\left(x^2+y\right)\left(y^2+x\right)=\left(x-y\right)^2\) \(x,y\in Z\)
\(b)x^2\left(y+3\right)=yz^2\) \(x,y,z\in Z_+\)
\(c)x\left(x+1\right)\left(x+7\right)\left(x+8\right)=y^2\) \(x,y\in Z_+\)
\(d)x^4+x^2-y^2+y+10=0\) \(x,y\in Z\)
\(e)x^3-y^3-2y^2-3y-1=0\) \(x,y\in Z_+\)
\(f)x^4-y^4+z^4+2x^2y^2+3x^2+4z^2+1=0\) \(x,y,z\in Z\)
B1: Giải các phương trình sau
1) left(3x-2right)left(dfrac{2left(x+3right)}{7}-dfrac{4x-3}{5}right)0
2) left(x-dfrac{3}{4}right)^2+left(x-dfrac{3}{4}right)left(x-dfrac{1}{2}right)0
3) dfrac{12}{9-x^2}+dfrac{2}{x-3}+dfrac{3}{x+3}1
4) dfrac{1}{x-1}+dfrac{2}{x^2+x+1}dfrac{3x^2}{x^3-1}
các bạn ơi giúp mình với
mik cảm ơn !!!
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B1: Giải các phương trình sau
1) \(\left(3x-2\right)\left(\dfrac{2\left(x+3\right)}{7}-\dfrac{4x-3}{5}\right)=0\)
2) \(\left(x-\dfrac{3}{4}\right)^2+\left(x-\dfrac{3}{4}\right)\left(x-\dfrac{1}{2}\right)=0\)
3) \(\dfrac{12}{9-x^2}+\dfrac{2}{x-3}+\dfrac{3}{x+3}=1\)
4) \(\dfrac{1}{x-1}+\dfrac{2}{x^2+x+1}=\dfrac{3x^2}{x^3-1}\)
các bạn ơi giúp mình với
mik cảm ơn !!!
I : CMR
a) (ab+1)^2 \(\ge\)\(\frac{4}{ab}\)
b) \(\left(ab+2\right)^2\le\left(a^2+1\right)\left(b^2+4\right)\)
c) \(2\left(4a^2+b^2\right)\ge\left(2a+b\right)^2\)
d) \(x^5+y^5\ge xy\left(x^3+y^3\right)\) với x , y >0
help me !!!
Rút gọn và tính gt biểu thức:
\(E=x^2\left(x+1\right)-y^2\left(y-1\right)+xy-3xy\left(x-y-1\right)+2017\) với x-y=-3
1) giải phương trình :
a) left(2+3right)left(dfrac{3x+8}{2-7x}+1right)left(x-5right)left(dfrac{3x+8}{2-7x}+1right)
b) dfrac{7x+10}{x+1}left(x^2-x-2right)-dfrac{7x+10}{x+1}left(2x^2-3x-5right)0
c) dfrac{2x+5}{x+3}+1dfrac{4}{x^2+2x-3}-dfrac{3x-1}{1-x}
d) dfrac{13}{2x^2+x-21}+dfrac{1}{2x+7}+dfrac{6}{9-x^2}0
i) dfrac{x-49}{50}+dfrac{x-50}{49}dfrac{49}{x-50}+dfrac{50}{x-49}
k) dfrac{1+dfrac{x}{x+3}}{1-dfrac{x}{x+3}}3
Đọc tiếp
1) giải phương trình :
a) \(\left(2+3\right)\left(\dfrac{3x+8}{2-7x}+1\right)=\left(x-5\right)\left(\dfrac{3x+8}{2-7x}+1\right)\)
b) \(\dfrac{7x+10}{x+1}\left(x^2-x-2\right)-\dfrac{7x+10}{x+1}\left(2x^2-3x-5\right)=0\)
c) \(\dfrac{2x+5}{x+3}+1=\dfrac{4}{x^2+2x-3}-\dfrac{3x-1}{1-x}\)
d) \(\dfrac{13}{2x^2+x-21}+\dfrac{1}{2x+7}+\dfrac{6}{9-x^2}=0\)
i) \(\dfrac{x-49}{50}+\dfrac{x-50}{49}=\dfrac{49}{x-50}+\dfrac{50}{x-49}\)
k) \(\dfrac{1+\dfrac{x}{x+3}}{1-\dfrac{x}{x+3}}=3\)
I : Giải các phường trình sau
a) left(3x-2right)left(dfrac{2left(x+3right)}{7}-dfrac{4x-3}{5}right)0
b) left(x-dfrac{3}{4}right)^2+left(x-dfrac{3}{4}right)left(x-dfrac{1}{2}right)0
c) dfrac{12}{9-x^2}+dfrac{2}{x-3}+dfrac{3}{x+3}1
d) dfrac{1}{x-1}+dfrac{2}{x^2+x+1}dfrac{3x^2}{x^3-1}
help me
Đọc tiếp
I : Giải các phường trình sau
a) \(\left(3x-2\right)\left(\dfrac{2\left(x+3\right)}{7}-\dfrac{4x-3}{5}\right)=0\)
b) \(\left(x-\dfrac{3}{4}\right)^2+\left(x-\dfrac{3}{4}\right)\left(x-\dfrac{1}{2}\right)=0\)
c) \(\dfrac{12}{9-x^2}+\dfrac{2}{x-3}+\dfrac{3}{x+3}=1\)
d) \(\dfrac{1}{x-1}+\dfrac{2}{x^2+x+1}=\dfrac{3x^2}{x^3-1}\)
help me
1. dfrac{5left(x-1right)+2}{6}-dfrac{7x-1}{4}dfrac{2left(2x+1right)}{7}-5
2. x-dfrac{3left(x+30right)}{15}-24dfrac{1}{2}dfrac{7x}{10}-dfrac{2left(10x+2right)}{5}
3. 14dfrac{1}{2}-dfrac{2left(x+3right)}{5}dfrac{3x}{2}-dfrac{2left(x-7right)}{3}
4. dfrac{x+1}{3}+dfrac{3left(2x+1right)}{4}dfrac{2x+3left(x+1right)}{6}+dfrac{7+12x}{12}
5. dfrac{3left(2x-1right)}{4}-dfrac{3x+1}{10}+1dfrac{2left(3x+2right)}{5}
6. x-dfrac{3}{17}left(2x-1right)dfrac{7}{34}left(1-2xright)+dfrac{10x-3}{2}
7. dfrac{3le...
Đọc tiếp
1. \(\dfrac{5\left(x-1\right)+2}{6}-\dfrac{7x-1}{4}=\dfrac{2\left(2x+1\right)}{7}-5\)
2. \(x-\dfrac{3\left(x+30\right)}{15}-24\dfrac{1}{2}=\dfrac{7x}{10}-\dfrac{2\left(10x+2\right)}{5}\)
3. \(14\dfrac{1}{2}-\dfrac{2\left(x+3\right)}{5}=\dfrac{3x}{2}-\dfrac{2\left(x-7\right)}{3}\)
4. \(\dfrac{x+1}{3}+\dfrac{3\left(2x+1\right)}{4}=\dfrac{2x+3\left(x+1\right)}{6}+\dfrac{7+12x}{12}\)
5. \(\dfrac{3\left(2x-1\right)}{4}-\dfrac{3x+1}{10}+1=\dfrac{2\left(3x+2\right)}{5}\)
6. \(x-\dfrac{3}{17}\left(2x-1\right)=\dfrac{7}{34}\left(1-2x\right)+\dfrac{10x-3}{2}\)
7. \(\dfrac{3\left(x-3\right)}{4}+\dfrac{4x-10,5}{10}=\dfrac{3\left(x+1\right)}{5}+6\)
8. \(\dfrac{2\left(3x+1\right)+1}{4}-5=\dfrac{2\left(3x-1\right)}{5}-\dfrac{3x+2}{10}\)
Chứng minh các phương trình sai có vô số nghiệm
a,\(\left(2x-1\right)^2+\left(x+4\right)^2+5=2x\left(x+1\right)+\left(x+2\right)^2+2x^2-2x+18\)
b,\(\dfrac{5x-7}{4}-\dfrac{9x-4}{5}=-x-\dfrac{19-9x}{20}\)
c,\(|y-3|=y-3\)